Input: Identify the most salient words:

Several teenagers are playing soccer in a field.

Output: field
soccer
teenager

Input: Identify the most salient words:

security forces takes up positions on a road leading

Output: lead
road
take

Input: Identify the most salient words:

portrait of an owl with a crown on his head .

Output: crown
owl
portrait

Input: Identify the most salient words:

A train coming out of an tunnel of a city.

Output:
city
train
tunnel