Input: Identify the most salient words:

An elderly man with gray hair is smoking a cigar on a public bench.

Output: bench
cigar
smoke

Input: Identify the most salient words:

person joined the audience so she could have a direct discussion with the students asking questions .

Output: ask
audience
discussion
question

Input: Identify the most salient words:

burning matches in a row

Output: burn
match
row

Input: Identify the most salient words:

middle aged couple on a canal boat passing english civil parish

Output:
boat
parish
pass