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

[EX Q]: statement: algae plays significant roles as food in water ecosystems, question: What plays a significant role as food in water ecosystems?
[EX A]: algae

[EX Q]: statement: Transcription takes place in the place where ribosomes are formed., question: Where does transcription take place?
[EX A]: ribosomes

[EX Q]: statement: medicines have no effect on HIV, question: What has no effect on HIV?
[EX A]:
medicines