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: gases released during the use of fossil fuels causes global warming.
Output: 


Output:
Fossil fuels.
burning oil fossil fuel.
electric cars fossil fuels.
fossil fuel gas.
fossil fuel gasoline.
fossil fuel oil.
fossil fuel sulfur dioxide.
fossil fuels gas.
fossil fuels global warm.
gas global warming.
global warming causes death.
global warming causes extinction.
global warming causes sea levels to rise.
global warming climate.
global warming effect.
global warming kills.