Task: Text Categorization
Input (English): Its delta names a state with capital at Tucupita, and it forms the beaches of San Fernando de Atabapo. The Ature  and Maipures cataracts divide this river, which contains the Llovinza Falls. The biggest waterfall in its upper portion is called Salto Libertador, while it is connected to the Amazon via the Casiquiare and Esmerelda, which form the Rio Negro. It flows from Delgado Chalbaud mountain to the Delta Amacuro into the Gulf of Paria, and to its south is the plateau Auyantepui, which features the highest waterfall in the world, Angel Falls. Flowing through the Llanos and forming part of the border with Columbia, for 10 points, identify this chief river of Venezuela. 
Output (English): Social Science