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: Vesicle transport requires energy, so it is also a form of active transport.
Output: 


Output:
Vesicle transport.
active transport energy.
active transport movement.
active transport.
food provides energy.
transport atp.
vesicle sac.
vesicle transport energy.
vesicle transport golgi.
vesicle transport of.
vesicle transport.