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

statement: mosses depend on water for reproduction, question: What do mosses depend on for reproduction?
water

statement: Fossils are remnants of ancient forms., question: What are remnants of ancient forms?
Fossils

statement: therian mammals give birth to live young, and house the embryo until it is complete, question: What mammals give birth to live young?
therian mammals