Input: Identify the most salient words:

helicopters return from a mission over parliamentary democracie during military conflict

Output: helicopter
mission
return

Input: Identify the most salient words:

adaptation some organisms are better adapted to their environment .

Output: adaptation
environment
organism

Input: Identify the most salient words:

flying view of waterfall flowing over edge into river

Output: flow
fly
river
view

Input: Identify the most salient words:

a herd of cows eat hay during a winter

Output:
cow
eat
hay
winter