Input: Identify the most salient words:

flow diagram of this study

Output: diagram
flow
study

Input: Identify the most salient words:

Commuter trains traveling in opposite directions at the station.

Output: station
train
travel

Input: Identify the most salient words:

politician addresses the audience and choir singers during a welcoming concert .

Output: audience
concert
politician

Input: Identify the most salient words:

leader of politician and his family relaxing on a rowing boat

Output:
boat
family
relax