Input: Identify the most salient words:

demonstrators burn a flag during a demonstration against the visit of politician .

Output: burn
demonstration
flag
politician

Input: Identify the most salient words:

farmer loading a wagon with hay

Output: farmer
hay
load

Input: Identify the most salient words:

the future site is ready for construction to begin

Output: begin
construction
site

Input: Identify the most salient words:

grizzly bear catching salmon at the top of a waterfall

Output:
bear
catch
salmon
top
waterfall