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: Kevin has a hybrid car and Steve has a large truck. Which car likely pollutes less? 
 Option1: hybrid 
 Option2: truck 
 Explanation: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.

Ex Output:
hybrid


Ex Input:
Question: A family that is very small, compared to one that is enormous, will have allele differences that are 
 Option1: smaller 
 Option2: greater 
 Explanation: The smaller a population is, the more allele frequencies may drift.

Ex Output:
smaller


Ex Input:
Question: Johnny was was playing with chalk outside. His mom called him in for lunch, while he was inside his red chalk sat in the shade, and his blue chalk was in the sun. When Johnny returned outside and picked up the red and blue which had a higher temperature? 
 Option1: the red chalk 
 Option2: the blue chalk 
 Explanation: If two objects have the same mass, the object with the higher temperature has greater thermal energy.

Ex Output:

the blue chalk