Input: Identify the most salient words:

flock of ducks follow a boat from which they were given food

Output: duck
flock
food

Input: Identify the most salient words:

The gambler then leaves and begins talking to Robert Deniro and telling him about the issue.

Output: begin
gambler
issue
leave
tell

Input: Identify the most salient words:

a distant star illuminates an extrasolar planet on the horizon of a frozen moon

Output: illuminate
moon
star

Input: Identify the most salient words:

olympic athletes compete in metres final during day .

Output:
athlete
compete
day
metre