What are the keywords in the following sentence? i like the walls for a formal dining room
like, room, wall

What are the keywords in the following sentence? A round mirror is on a wall with a reflection in it.
mirror, reflection, wall

What are the keywords in the following sentence? people try computers carrying operating system software the new operating system at an electric shop
operate, software, system

What are the keywords in the following sentence? A box stands at home plate while an adult pitches a softball to him
pitch, plate, softball