Instructions: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Input: Fact1: when a river floods , that river deposits soil in flood plains, Fact2: When the river is full, it floods into the flood plain and leaves behind fertile soil., Question: Where do plains get soil from? (A) earth (B) hurricanes (C) Sediment (D) ocean (E) canyons (F) wind (G) climate (H) floods
Output:
H