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: if a planet becomes too hot then that planet cannot sustain life.
Output: 


Output:
climate change warmer planet.
greenhouse effect venus.
hot planets close to sun.
hottest planet.
increased temperatures can kill.
planet elliptical orbit.
planet mars.
planet sun heat.
planet temperature for life.
planet too hot.
sunlight heats up a planet.
sustain life keep thriving.