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: When it is very warm what happens to the speed of items? 
 Option1: speed up 
 Option2: slow down 
 Explanation: For a given medium, sound waves travel more slowly at lower temperatures.

Ex Output:
speed up


Ex Input:
Question: John was viewing a patient's vital signs at the hospital. He could see clearly that the less oxygen to the cells, the pulse rate would become 
 Option1: Higher 
 Option2: Lower 
 Explanation: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.

Ex Output:
Higher


Ex Input:
Question: Milo is trying to heat his room with a space heater. If he turns up the thermostat to a hotter setting, which is happening to the energy the heater is producing? 
 Option1: increasing 
 Option2: decreasing 
 Explanation: Bigger stars produce more energy, so their surfaces are hotter.

Ex Output:

increasing