What are the keywords in the following sentence? morning fog hanging over a calm lake with sun and lens flare and a pier .
fog, hang, sun

What are the keywords in the following sentence? A little boy in his clothes running through a fountain and getting soaked.
fountain, run, soak

What are the keywords in the following sentence? A bathroom with two toilets and a shower in it, with no space for any of them.
bathroom, shower, space

What are the keywords in the following sentence? riot police detain the protester during the demonstration at the summit
demonstration, detain, police, protester