What are the keywords in the following sentence? A bear in a zoo looks over the safety fence.
bear, fence, look, zoo

What are the keywords in the following sentence? an interesting looking biplane is on exhibit outside art museum
exhibit, look, museum

What are the keywords in the following sentence? aerial shot of the green meadow under blue sky with clouds .
cloud, meadow, shot, sky

What are the keywords in the following sentence? living room and bedroom of the new apartments
apartment, bedroom, room