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: Passive immunity lasts only as long as the antibodies survive in body fluids.
answer:
antibodies protein.


question:
Fact: Loss of ozone has created an ozone hole over Antarctica.
answer:
OZONE ULTRAVIOLET.


question:
Fact: Pollination is the fertilization step in the sexual reproduction of plants.
answer:

Pollination.