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: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Output: 


Output:
a hemisphere is tilted away from the sun.
axis hemisphere.
hemisphere receives less direct sunlight.
hemisphere winter.
hemisphere.
less direct light from sun.
less direct sunlight.
sun is a star.
sun star.
sunlight energy.
sunlight photons.
winter tilt.