What are the keywords in the following sentence? the christmas tree appears in this undated image .
appear, image, tree

What are the keywords in the following sentence? the rain is mountain range appearing among the clouds
appear, cloud, rain

What are the keywords in the following sentence? miners working at the mine with an engineer
engineer, mine, work

What are the keywords in the following sentence? A mirror on a wall in a bathroom.
bathroom, mirror, wall