What are the keywords in the following sentence? a teacher talks to his pupils at a guarded outdoor classroom .
classroom, pupil, talk, teacher

What are the keywords in the following sentence? An orange flower with a broken stem in water.
flower, stem, water

What are the keywords in the following sentence? girl opens a window into the street in winter frosty day .
day, open, window

What are the keywords in the following sentence? text printed on paper laid out to judge how it fits on the fabric .
fabric, fit, judge, lay, paper