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: Tanya has a substance with mass 10kg. Logan has a substance with mass 5kg. If both substances are the same size, who has the less dense substance. 
 Option1: Tanya 
 Option2: Logan 
 Explanation: If we have two materials with the same volume, the material with a higher mass will be more dense.

Ex Output:
Logan


Ex Input:
Question: If Mary is building a rocket and she wants it to fly as high as possible, what should she do to the mass of the rocket? 
 Option1: increase it 
 Option2: decrease it 
 Explanation: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.

Ex Output:
decrease it


Ex Input:
Question: Jan wants to help the Earth, so she stops driving to work and instead bikes. Because Jan is using less fossil fuels, she is contributing carbon dioxide emissions in amounts that are 
 Option1: greater 
 Option2: smaller 
 Explanation: The carbon taxes encourage people to use less fossil fuel, which reduces carbon dioxide emissions.

Ex Output:

smaller