Task: Question Answering
Input (English): Process:  -A large rocky area is formed -The rocky area has a higher elevation than the surrounding areas -Water from precipitation falls in the area -The water forms a stream -The stream flows towards lower elevation -The stream becomes a river -The river continues to flow along the same path for a long time -The river erodes the rocky area that it touches -The eroded area cuts deeply into the rock.
 Question: What is the effect of the streams and rivers are smaller on less or smaller valleys being formed.?
Output (English): for