What are the keywords in the following sentence? boys and pupils are sitting on the lesson in classroom in school at first september
classroom, lesson, school, sit

What are the keywords in the following sentence? Four zebras gather together beneath the shade of a tree on the grass-swept plain.
gather, shade, tree

What are the keywords in the following sentence? ski resort showing restaurants by the side of the piste
piste, resort, restaurant

What are the keywords in the following sentence? sheep chewing grass looking at camera .
grass, look, sheep