Input: Identify the most salient words:

a group of students volunteer their time to help the community

Output: help
student
volunteer

Input: Identify the most salient words:

august books of unit of time

Output: book
time
unit

Input: Identify the most salient words:

chat atop islamic place of worship

Output: chat
place
worship

Input: Identify the most salient words:

a book describing color through texture and words for the blind .

Output:
book
color
word