question: What song has a Roud Folk Song Index number of 7622 and was written by Sarah Josepha Hale?
answer: Mary Had a Little Lamb
context: Title: Did You Ever See a Lassie?
  Passage: "Did You Ever See a Lassie?"  is a folk song, nursery rhyme, and singing game.  It has a Roud Folk Song Index number of 5040.
  Title: Aiken Drum
  Passage: "Aiken Drum" is a popular Scottish folk song and nursery rhyme, which probably has its origins in a Jacobite song about the Battle of Sheriffmuir (1715).  It has a Roud Folk Song Index number of 2571.
  Title: The Twelve Days of Christmas (song)
  Passage: "The Twelve Days of Christmas" (Roud 68) is an English Christmas carol that enumerates in the manner of a cumulative song a series of increasingly grand gifts given on each of the twelve days of Christmas (the twelve days that comprise the Christmas season starting with Christmas Day).  The song, published in England in 1780 without music as a chant or rhyme, is thought to be French in origin.  "The Twelve Days of Christmas" has a Roud Folk Song Index number of 68.  The tunes of collected versions vary.  The standard tune now associated with it is derived from a 1909 arrangement of a traditional folk melody by English composer Frederic Austin, who first introduced the now familiar prolongation of the verse "five gold rings".
  Title: Liberia; or, Mr. Peyton's Experiments
  Passage: Liberia; or, Mr. Peyton's Experiments is an 1853 novel by Sarah Josepha Hale, the author of the nursery rhyme "Mary Had a Little Lamb", who wrote the novel under the name of Sara J. Hale.
  Title: Mary Had a Little Lamb
  Passage: "Mary Had a Little Lamb" is an English language nursery rhyme of nineteenth-century American origin.  It has a Roud Folk Song Index number of 7622.
  Title: Lavender's Blue
  Passage: "Lavender's Blue" (sometimes called "Lavender Blue") is an English folk song and nursery rhyme dating to the 17th century.  It has a Roud Folk Song Index number of 3483.  It has been recorded in various forms since the 20th century and some pop versions have been hits in the US and UK charts.
citations: Mary Had a Little Lamb Liberia; or, Mr. Peyton's Experiments