What are the keywords in the following sentence? a pool floating in the sky
float, pool, sky

What are the keywords in the following sentence? ancient complex that includes buddhist place of worship found to be larger than previously estimated
find, place, worship

What are the keywords in the following sentence? a large ornamental pond or small lake with a pretty rustic wooden bridge in a country garden in summer
bridge, garden, lake

What are the keywords in the following sentence? this concert poster caught my eye in its really strange selection of colours .
catch, eye, poster