Given a statement and question, generate the answer to the question such that the answer is contained in the statement.

[EX Q]: statement: at least two mirrors are used for observing stars by astronomers, question: How many mirrors are used for observing stars by astronomers?
[EX A]: at least two

[EX Q]: statement: bone density decreases when osteoclasts are more active than osteoblasts, question: What is more active than osteoblasts?
[EX A]: osteoclasts

[EX Q]: statement: Mosses, liverworts and hornworts occupy areas in moist habitats., question: Mosses, liverworts and hornworts occupy areas in what type of habitat?
[EX A]:
moist