What are the keywords in the following sentence? large aquarium built over a bed as a headboard
aquarium, bed, build

What are the keywords in the following sentence? an empty picnic blanket on green grass under blue sky with cloud .
blanket, grass, sky

What are the keywords in the following sentence? a city is a town and comune of province in the region
province, region, town

What are the keywords in the following sentence? fans fill sports facility up to the third floor showing their unwavering support toward the legend .
facility, fan, support