Definition: 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.

Positive Example 1 -
Input: Fact: pesticides cause pollution.
Output: pollution harms.

Positive Example 2 -
Input: Fact: pesticides cause pollution.
Output: modern farming pesticide.

Negative Example 1 -
Input: Fact: pesticides cause pollution.
Output: computer harms.

Negative Example 2 -
Input: Fact: pesticides cause pollution.
Output: toopaste helps.

Now complete the following example -
Input: Fact: thirst is used to make an animal realize that it needs to replenish its bodily water by the body.
Output: 


Output:
animal chicken.
animal cow.
animals need water to survive.
human animal.
thirst dehydration.
thirst is used to make an animal realize that it needs to replenish its bodily water by the body.
thirst signals need to drink.
thirst water.
thirst.
water h2o.
water.