Input: Identify the most salient words:

a tugboat helps the ship as it makes its way toward the inner harbor in the port .

Output: help
port
ship

Input: Identify the most salient words:

mix a white brick and dark stone for a striking high contrast exterior .

Output: brick
exterior
stone

Input: Identify the most salient words:

special forces soldiers provide security during a led patrol

Output: patrol
security
soldier

Input: Identify the most salient words:

this is a space shuttle launching into space

Output:
launch
shuttle
space