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: Feathers help birds fly and provide insulation., Fact2: Some birds are flightless birds., Question: Why do the flightless have feathers? (A) layers of fat (B) Sublimation (C) it needs them (D) warm-blooded (E) Air conditioning (F) Radiation (G) Insulation (H) protect them

Ex Output:
G


Ex Input:
Fact1: tidal energy can be used to produce electricity, Fact2: Tidal caves are formed by the energy of the rising and falling tides., Question: what can produce electricity? (A) rivers (B) animal transport (C) tidal caves (D) Nematoda (E) rays or beams (F) animals (G) cactuses (H) photons

Ex Output:
C


Ex Input:
Fact1: Wings are part of the exoskeleton and attached to the thorax., Fact2: Spiracles are located on the abdomen and thorax., Question: What shares a location with spiracles? (A) wings (B) pistons (C) white (D) bats (E) animals (F) insects (G) pollen (H) ovaries

Ex Output:

A