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: Mammals have a layer of fat under the skin to help insulate the body., Fact2: Harbor seals, like sea lions, have evolved to utilize a layer of fat called blubber., Question: How do sea lions keep warm? (A) protected (B) warm (C) Swimming fast (D) Sleeping (E) hydration (F) Blubber (G) four limbs (H) Eating a lot of fish

Ex Output:
F


Ex Input:
Fact1: Viruses cause many human diseases., Fact2: Some smallpox viruses are maintained in laboratories., Question: What can smallpox cause? (A) contamination (B) harmful substances (C) vaccines (D) photosynthesis (E) extinction (F) cellular respiration (G) Destroy crops (H) human disease

Ex Output:
H


Ex Input:
Fact1: Bird beaks are generally adapted for the food they eat., Fact2: An adaptation is an inherited variation that helps an organism to survive., Question: What are inherited? (A) stones (B) anemia (C) four limbs (D) colors (E) Bird beaks (F) magic (G) the eyes (H) dirt

Ex Output:

E