What are the keywords in the following sentence? Three zebras standing and munching on some hay in their pen.
hay, munch, pen

What are the keywords in the following sentence? this room has a built in wardrobe with shelves
build, room, shelf

What are the keywords in the following sentence? a boat on sea in the morning
boat, morning, sea

What are the keywords in the following sentence? cross glows against the rising sun
cross, rise, sun