Input: Identify the most salient words:

Several airplanes are sitting at gates of an airport.

Output: airplane
airport
gate
sit

Input: Identify the most salient words:

film writer arrives for the premiere during festival .

Output: arrive
festival
premiere
writer

Input: Identify the most salient words:

three zebra facing the camera in a field

Output: face
field
zebra

Input: Identify the most salient words:

room appears to be floating in the pond .

Output:
appear
float
pond