Answer the following question: Information:  - The Appalachian Mountains, often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. It once reached elevations similar to those of the Alps and the Rocky Mountains before naturally occurring erosion. The Appalachian chain is a barrier to east-west travel, as it forms a series of alternating ridgelines and valleys oriented in opposition to most roads running east or west.  - Winyah Bay is a coastal estuary that is the confluence of the Waccamaw River, the Pee Dee River, the Black River, and the Sampit River in Georgetown County, in eastern South Carolina. The historic port city of Georgetown is located on the bay, and the bay generally serves as the terminating point for the Grand Strand.  - North Carolina is a state in the southeastern region of the United States. The state borders South Carolina and Georgia to the south, Tennessee to the west, Virginia to the north, and the Atlantic Ocean to the east. North Carolina is the 28th most extensive and the 9th most populous of the U.S. states. The state is divided into 100 counties. The capital is Raleigh. The most populous municipality is Charlotte, and it is the second largest banking center in the United States after New York City.  - Tennessee ("Tanasi") is a state located in the southeastern region of the United States. Tennessee is the 36th largest and the 16th most populous of the 50 United States. Tennessee is bordered by Kentucky and Virginia to the north, North Carolina to the east, Georgia, Alabama, and Mississippi to the south, and Arkansas and Missouri to the west. The Appalachian Mountains dominate the eastern part of the state, and the Mississippi River forms the state's western border. Tennessee's capital and second largest city is Nashville, which has a population of 654,610. Memphis is the state's largest city, with a population of 655,770.  - The Grand Strand is a large stretch of beaches on the East Coast of the United States extending from Little River to Georgetown in the U.S. State of South Carolina. It consists of more than 60 miles along an essentially uninterrupted arc of beach land, beginning around the Little River and terminating at Winyah Bay. The population of the Grand Strand was 329,449 at the 2010 United States Census.  - The Pee Dee River , also known as the Great Pee Dee River , is a river in North Carolina and South Carolina . It originates in the Appalachian Mountains in North Carolina , where its upper course , above the mouth of the Uwharrie River is known as the Yadkin River . It is extensively dammed for flood control and hydroelectric power . The lower part of the river is named Pee Dee ( in colonial times written Pedee ) after the Native American Pee Dee tribe . The Pee Dee region of South Carolina , composed of the northeastern counties of the state , was named after the tribe and / or river . The first Europeans believed to have navigated part of the river was a party sent by Lucas Vázquez de Ayllón in 1521 . They named it `` River of St. John the Baptist . '' Navigable up to the fall line at Cheraw , the river was an important trade route through the Low Country from colonial times . The largest lumber company in the world existed at the turn of the 20th century near the river 's mouth at Georgetown . The virgin pine forests of the Pee Dee region were cut over , and the logs floated in rafts downriver to be sawn into lumber and exported to the northern United States and Europe . The lower part of the river flood plain was extensively developed for rice culture in colonial time ; rice was the major export of the area from the port at Georgetown . Rice culture declined with the loss of slave labor after the Civil War , and increased overseas competition . Two hurricanes at the beginning of the 20th century destroyed much of the rice canal infrastructure and effectively ended the remnants of rice culture . Today the river is not extensively used for navigation . It is an important source of electric power and public water supplies , as well as recreational use . While the Pee Dee is free - flowing in South Carolina , upstream in North Carolina , several dams have been constructed on it . The opening and closing of these dams causes dramatic swings in the depth of the river in South Carolina . The sharing of water...  - Classical antiquity (also the classical era, classical period or classical age) is a term for a long period of cultural history centered on the Mediterranean Sea, comprising the interlocking civilizations of ancient Greece and ancient Rome, collectively known as the Greco-Roman world. It is the period in which Greek and Roman society flourished and wielded great influence throughout Europe, North Africa and Southwestern Asia.  - The Uwharrie River (pronounced "yoo-WAHR-ee") is a river, about 60 mi (100 km) long, in the Piedmont region of central North Carolina in the United States. It is a tributary of the Pee Dee River, which flows to the Atlantic Ocean.  - A tributary or affluent is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean.  - The Pee Dee region of South Carolina is the northeastern corner of the state. It is the area of the lower watershed of the Pee Dee River, named after the Pee Dee Native American tribe. Its center is Florence. It also encompasses the Grand Strand, which includes the beaches running from the North Carolina state border to the Winyah Bay in Georgetown County in South Carolina.  - Appalachia is a cultural region in the Eastern United States that stretches from the Southern Tier of New York to northern Alabama, Mississippi and Georgia. While the Appalachian Mountains stretch from Belle Isle (Newfoundland and Labrador) in Canada to Cheaha Mountain in Alabama, the cultural region of Appalachia typically refers only to the central and southern portions of the range. As of the 2010 United States Census, the region was home to approximately 25 million people.  - Europe is a continent that comprises the westernmost part of Eurasia. Europe is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, and the Mediterranean Sea to the south. To the east and southeast, Europe is generally considered as separated from Asia by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways of the Turkish Straits. Yet the non-oceanic borders of Europea concept dating back to classical antiquityare arbitrary. The primarily physiographic term "continent" as applied to Europe also incorporates cultural and political elements whose discontinuities are not always reflected by the continent's current overland boundaries.    Given the information above, choose from the list below the object entity that exhibits the relation 'tributary' with the subject 'pee dee river'.  Choices: - belle  - black river  - era  - little river  - mississippi river  - or river
Answer:
black river