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.

Ex Input:
Fact: when a hemisphere is tilted towards the sun , that hemisphere receives more direct sunlight.

Ex Output:
direct during sunlight summer.


Ex Input:
Fact: Bile reduces the acidity of food entering from the highly acidic stomach.

Ex Output:
acid reduction.


Ex Input:
Fact: Minerals are chemical elements that are essential for body processes.

Ex Output:

body process.