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").

Ex Input:
Fact1: Rivers are usually larger than streams., Fact2: Watersheds are creeks, streams and rivers., Question: What is a river also? (A) storing water (B) loose soil (C) dangerous (D) fertile (E) more abundant (F) watershred (G) body water (H) kinetic

Ex Output:
F


Ex Input:
Fact1: Secondary meristem is located within and around the vascular tissues., Fact2: Plant tissues are produced from meristems., Question: What has vascular tissue? (A) rocks (B) the Sun (C) trees (D) plants (E) grass (F) Conifers (G) all plankton (H) Oak

Ex Output:
D


Ex Input:
Fact1: Echinoderms have a unique water vascular system with tube feet., Fact2: All echinoderms are deuterostomes ., Question: What can have a water vascular system with tube feet? (A) ducks (B) peachleaf willow (C) cats (D) orchids (E) Most plants (F) horses (G) animals (H) deuterostomes

Ex Output:

H