Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Ex Input:
pablo escobar and his brother's school once sent them home because they had no shoes and no money to buy them.

Ex Output:
pablo escobar


Ex Input:
chelers is a commune.

Ex Output:
chelers


Ex Input:
army burn hall college (abhc) formerly burn hall school is a school and college in abbottabad, pakistan.

Ex Output:

army burn hall college