Input: Identify the most salient words:

chocolate in the form of heart

Output: chocolate
form
heart

Input: Identify the most salient words:

crowds of shoppers in a modern shopping centre

Output: centre
crowd
shopper

Input: Identify the most salient words:

reproduction is the life process by which organisms produce new organisms .

Output: organism
produce
reproduction

Input: Identify the most salient words:

firefighters battle heavy smoke and fire at an apartment building under construction in may .

Output:
battle
fire
firefighter
may