What are the keywords in the following sentence? site listing category built by monarch for astronomer is shown
category, list, monarch, site

What are the keywords in the following sentence? The biker crashes his bike into a wall.
bike, biker, crash

What are the keywords in the following sentence? write an equation of the line passing through the given points .
equation, line, pass, write

What are the keywords in the following sentence? saturn is the sixth planet in our solar system and has planetary rings with moons
planet, ring, saturn