question: Holston River joins up at Knoxville with which river that begins in Transylvania County, North Carolina? 
answer: French Broad River
context: Title: Holston River
  Passage: The Holston River is a 136 mi river that flows from Kingsport, Tennessee, to Knoxville, Tennessee.  Along with its three major forks (North Fork, Middle Fork and South Fork), it comprises a major river system that drains much of northeastern Tennessee, southwestern Virginia, and northwestern North Carolina.  The Holston's confluence with the French Broad River at Knoxville marks the beginning of the Tennessee River.
  Title: North Carolina Highway 281
  Passage: North Carolina Highway 281 (NC 281) is a primary state highway in the state of North Carolina.  The highway runs north–south, connecting communities in western Jackson County and scenic areas of southwest Transylvania County.  It is the only North Carolina state highway that changes numbers when crossing into South Carolina.
  Title: Roan Creek
  Passage: Roan Creek is a tributary of the Watauga River that rises near the border between the U.S. states of Tennessee and North Carolina.  Its source is located along the slopes of Snake Mountain near Trade in Johnson County, Tennessee.  From its source, Roan Creek flows north, then turns west around the northern end of Stone Mountain.  Then it flows south and west through Cherokee National Forest in the valley between Stone Mountain and Doe Mountain, until entering the Watauga River and Watauga Lake, the reservoir behind Watauga Dam.  Its waters eventually flow through the Watauga River, the Holston River, the Tennessee River, the Ohio River, and the Mississippi River to the Gulf of Mexico.
  Title: French Broad River
  Passage: The French Broad River flows 218 mi from near the town of Rosman in Transylvania County, North Carolina, into the state of Tennessee.  Its confluence with the Holston River at Knoxville is the beginning of the Tennessee River.  The river flows through the counties of Transylvania, Buncombe, Henderson, and Madison in North Carolina, and Cocke, Jefferson, Sevier, and Knox in Tennessee, and drains large portions of the Pisgah National Forest and the Cherokee National Forest.
citations: French Broad River Holston River