Input: Identify the most salient words:

A padded skateboarder turns his board.

Output: board
skateboarder
turn

Input: Identify the most salient words:

mass transportation system leaves a city and heads

Output: city
leave
system

Input: Identify the most salient words:

the estate also has acres of arable land and grassland as well as acres of woodland .

Output: acre
estate
land

Input: Identify the most salient words:

monarch and chivalric order member visit gothic structure

Output:
member
structure
visit