You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

Ex Input:
Question: Devon's cat, Fluffy, is looking for a nice warm spot to lay out in the sun. Because of how the sun heats the earth, and how some heat radiates into the air, the cat laying on the ground, rather than high up in a tree branch, would keep the cat 
 Option1: cooler 
 Option2: warmer 
 Explanation: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.

Ex Output:
warmer


Ex Input:
Question: Eric is researching near the Equator. Rob is researching near the North Pole. The warmest area is 
 Option1: Eric's 
 Option2: Reid's 
 Explanation: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Ex Output:
Eric's


Ex Input:
Question: For dating the age of a fossil, and compared to the isotope Carbon 14 with its 5730 year half-life, would Francium with a 22 minute half-life be a 
 Option1: less useful isotope? 
 Option2: more useful isotope 
 Explanation: Because these isotopes decay more slowly, they can be used to date much older specimens.

Ex Output:

less useful isotope?