What are the keywords in the following sentence? a time lapse of clouds and light moving over a glacier
cloud, glacier, move

What are the keywords in the following sentence? satellite shown flying over earth .
earth, fly, satellite

What are the keywords in the following sentence? the drone flies over a village near the shore of a lake
lake, shore, village

What are the keywords in the following sentence? yacht moored in the bay
bay, moor, yacht