instruction:
Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
question:
statement: FM systems are used for entertainment, question: What are used for entertainment?
answer:
FM systems


question:
statement: Photographers record pictures, question: Who record pictures?
answer:
Photographers


question:
statement: pollution contains very small or liquid particles in the air., question: What kind of particles are in the air?
answer:

liquid