Input: Identify the most salient words:

portrait of teenage student looks frustrated with problems on the blackboard

Output: blackboard
look
portrait

Input: Identify the most salient words:

little boy looking out to the lake in the park

Output: lake
look
park

Input: Identify the most salient words:

christmas sock for gifts that hang on the fireplace .

Output: fireplace
gift
hang
sock

Input: Identify the most salient words:

passengers leave a train that has just arrived

Output:
leave
passenger
train