question: Who is a dominant power pitcher and is a Dominican–American former starting pitcher in Major League Baseball?
answer: Pedro Martínez
context: Title: Oswaldo Peraza
  Passage: Oswald José Peraza [pay-RAH-za] (born October 19, 1962) is a Venezuelan former starting pitcher in Major League Baseball who played for the Baltimore Orioles (1988).  He batted and threw right-handed.  As of the 2014 season, he is the pitching coach for the Dominican Summer League Blue Jays.
  Title: Les Cain
  Passage: Leslie Cain (born January 13, 1948) is an American former starting pitcher in Major League Baseball who played for the Detroit Tigers.  He batted and threw left-handed.  In a four-season career, Cain posted a 23–19 record with 303 strikeouts and a 3.98 earned run average (ERA) in 373 innings.  Cain was a promising pitcher who had his career cut short by an arm injury.
  Title: Jim Bullinger
  Passage: James Eric Bullinger (born August 21, 1965) is a former starting pitcher in Major League Baseball who played for the Chicago Cubs (-), Montreal Expos () and Seattle Mariners ().  He batted and threw right-handed.  He is the brother of pitcher Kirk Bullinger.  Jim Bullinger was converted to a pitcher in the Cubs' farm system, after initially playing as a shortstop.  He played for the University of New Orleans before going pro, where his team made it to the 1984 College World Series.
  Title: Strikeout-to-walk ratio
  Passage: In baseball statistics, strikeout-to-walk ratio (K/BB) is a measure of a pitcher's ability to control pitches, calculated as strikeouts divided by bases on balls.  A pitcher who possesses a great K/BB ratio is usually a dominant power pitcher, such as Randy Johnson, Pedro Martínez, Curt Schilling, or Mariano Rivera.  However, in 2005, Minnesota Twins starting pitcher Carlos Silva easily led the major leagues in K/BB ratio with 7.89:1, despite striking out only 71 batters over 188⅓ innings pitched; he walked only nine batters.  The player with the highest regular season K/BB ratio is Minnesota Twins pitcher Phil Hughes in 2014, with a ratio of 11.6 (186 strikeouts and 16 walks),
  Title: Delvin James
  Passage: Delvin DeWayne James (born January 3, 1978) is a former starting pitcher in Major League Baseball who played for the Tampa Bay Devil Rays.  He was drafted by the Devil Rays in the 14th round of the amateur draft,after going 9-2 with a 1.89 era for the Nacogdoches Dragons .  He signed with them on June 11, 1996.  Delvin started his professional career in St.Pete Fl., with the gulf coast rookie ball team.  He would remain in the rays minor league system until 2002.  He made his major league debut April 2002 against the Detroit Tigers.  He became a free agent on Oct.15,2003.  He then signed with the Florida Marlins on December 15, of that year,but was released on March 24, 2004.  He then signed with the Anaheim Angels and played 2 seasons in their system.  After 10 pro.  seasons of baseball,James retired and went on to pursue another dream.  At the age of 28, he enrolled at Oklahoma State University to play college football.
  Title: Steve Kline (right-handed pitcher)
  Passage: Steven Jack Kline (born October 6, 1947) is an American former professional baseball player, a former starting pitcher who appeared in Major League Baseball from 1970 through 1974 and in 1977.  Listed at 6 ft tall and 200 lb , Kline batted and threw right-handed.
  Title: Juan Peña (baseball)
  Passage: Juan Francisco Peña [peh-nya] (born June 27, 1977 in Santo Domingo, Dominican Republic) is a former starting pitcher in Major League Baseball who played briefly for the Boston Red Sox during the season.  Listed at 6' 5", 215 lb., he batted and threw right-handed.
  Title: Yordano Ventura
  Passage: Yordano Ventura Hernández (] ; June 3, 1991 – January 22, 2017) was a Dominican professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB).  Ventura made his MLB debut on September 17, 2013.  Known as a power pitcher, his fastball topped out at 102 mph in his career.  He won the 2015 World Series with the Royals.  On January 22, 2017, Ventura was killed in a car crash in the Dominican Republic.
  Title: Power pitcher
  Passage: Power pitcher is a term in baseball for a pitcher who relies on the velocity of his pitches, sometimes at the expense of accuracy.  Power pitchers usually record a high number of strikeouts, and statistics such as strikeouts per 9 innings pitched are common measures of power.  An average pitcher strikes out about 5 batters per nine innings while a power pitcher will often strike out one or more every inning.  The prototypical power pitcher is National Baseball Hall of Fame member, Nolan Ryan, who struck out a Major League Baseball record 5,714 batters in 5,386 innings.  Ryan recorded seven no-hitters, appeared in eight Major League Baseball All-Star Games but also holds the record for most walks issued (2,795).
  Title: Pedro Martínez
  Passage: Pedro Jaime Martínez (born October 25, 1971) is a Dominican–American former starting pitcher in Major League Baseball who played for five teams from 1992 to 2009, most notably the Boston Red Sox from 1998 to 2004.  From 2002 to 2006 he held the major league record for the highest career winning percentage by a pitcher with at least 200 decisions; with a final record of 219 wins and 100 losses, he retired with the fourth-highest percentage in history, and the highest by a right-hander since the modern pitching era began in 1893.  He ended his career with an earned run average (ERA) of 2.93, the sixth-lowest by a pitcher with at least 2,500 innings pitched since 1920.  Martínez reached the 3,000 strikeout mark in fewer innings than any pitcher except Randy Johnson, and is the only pitcher to compile over 3,000 strikeouts with less than 3,000 innings pitched; his career strikeout rate of 10.04 per 9 innings trails only Johnson (10.61) among pitchers with over 1,500 innings.
citations: Pedro Martínez Strikeout-to-walk ratio