What are the keywords in the following sentence? cows graze in the meadow and eating grass
cow, grass, graze, meadow

What are the keywords in the following sentence? flowers being laid at the site following the tragedy
flower, follow, lay

What are the keywords in the following sentence? mist in a forest of trees
forest, mist, tree

What are the keywords in the following sentence? a man surfs the internet in a dark room
internet, room, surfs