Question: Holston River joins up at Knoxville with which river that begins in Transylvania County, North Carolina? 

Context paragraphs:
Neuse River: The Neuse River is a river rising in the Piedmont of North Carolina and emptying into Pamlico Sound below New Bern.  Its total length is approximately 275 mi , making it the longest river entirely contained in North Carolina.  The Trent River joins the Neuse at New Bern.  Its drainage basin, measuring 5630 sqmi in area, also lies entirely inside North Carolina.  It is formed by the confluence of the Flat and Eno rivers prior to entering the manmade, artificial Falls Lake reservoir in northern Wake County.  Its fall line shoals, known as the "Falls of the Neuse", lie submerged under the waters of Falls Lake.

Transylvania County Courthouse: Transylvania County Courthouse is a historic courthouse building located at Brevard, Transylvania County, North Carolina.  It was built in 1873, and is a two-story, "T"-plan Italianate style brick building with a hipped roof.  It has a rear addition built in the early-20th century.  The front facade features a projecting three-story tower topped by a concave mansard roof.

Holston River: 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.

Transylvania County Airport: Transylvania County Airport (FAA LID: 3NR3) is a public use airport in Transylvania County, North Carolina, United States.  It is located four nautical miles (7 km) east of the central business district of Brevard.

Brevard, North Carolina: Brevard is a city in Transylvania County, North Carolina, United States, with a population of 7,609 as of the 2010 Census.  It is the county seat of Transylvania County.

Roan Creek: 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.

French Broad River: 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.

North Carolina Highway 281: 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.

Silvermont (Brevard, North Carolina): Silvermont is a historic home located at Brevard, Transylvania County, North Carolina.  It was built in 1916-1917, and is a two-story, five bay, Colonial Revival style brick dwelling with a gambrel roof.  Also on the property is a one-story, stone veneer cottage.  It has a rear ell, two-story front portico supported by columns with Corinthian order capitals, one-story wraparound porch, porte cochere, and sunroom.  The house and grounds were donated to Transylvania County in 1972, and serve as a public recreation center.

Gorges State Park: Gorges State Park is a 7709 acre North Carolina state park in Transylvania County, North Carolina in the United States.  The land, along Jocassee Gorges, was purchased by the state from Duke Energy Corporation in 1999.  It is North Carolina's westernmost state park and one of the state's newest.  The park is adjacent to part of the Pisgah National Forest and the N.C. Wildlife Resources Commission's Toxaway Game Land.  Gorges State Park provides the principle access to the Horsepasture River on these adjoining public lands.

Supporting paragraphs: Holston River French Broad River
Answer: French Broad River