TASK DEFINITION: Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
PROBLEM: statement: stems are green to protect themselves., question: What is green to protect themselves?

SOLUTION: stems

PROBLEM: statement: Balanced eating aids in a good living, question: What is an important part of a good living?

SOLUTION: Balanced eating aids

PROBLEM: statement: a sifter is used for separating combined constituents, question: What is used for separating combined constituents?

SOLUTION:
a sifter