Input: Identify the most salient words:

a family relaxing in boat .

Output: boat
family
relax

Input: Identify the most salient words:

fishermen fixing their nets to get ready to go out

Output: fisherman
fix
net

Input: Identify the most salient words:

field of wheat and cloud in the sky

Output: field
sky
wheat

Input: Identify the most salient words:

A passenger train that has some writing on the side.

Output:
side
train
writing