What are the keywords in the following sentence? vintage things for sale on a flea market
market, sale, thing

What are the keywords in the following sentence? a desk with a laptop some keyboards and some books
book, keyboard, laptop

What are the keywords in the following sentence? the ancient buildings which aged are a part of palace historic site in province
building, part, site

What are the keywords in the following sentence? His opponent seizes the hand and forces him to the ground.
force, ground, hand