instruction:
In this task, you need to write a topic word from the given fact. The topic word must have at least one word overlap with the given fact. The topic word often involves adding a new word from a related concept. In your topic word, use at least one word from the given fact. Topic words with two or more words work best.
question:
Fact: Plasma cells are activated B cells that secrete antibodies.
answer:
antibodies fight infection.


question:
Fact: Introns are regions that do not code for proteins.
answer:
introns DNA.


question:
Fact: Plants that are adapted to very dry environments are called xerophytes.
answer:

Plants that are adapted to very dry environments are called xerophytes.