TASK DEFINITION: Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
PROBLEM: statement: weather refers to the conditions in the layer of gasses that encases the earth, question: What refers to the conditions in the layer of gasses that encases the earth?

SOLUTION: weather

PROBLEM: statement: Clouds also contains sulfur dioxide., question: What does clouds contain?

SOLUTION: sulfur dioxide

PROBLEM: statement: at least two mirrors are used for observing stars by astronomers, question: How many mirrors are used for observing stars by astronomers?

SOLUTION:
at least two