What are the keywords in the following sentence? astronaut works outside the space station .
astronaut, station, work

What are the keywords in the following sentence? A dessert table with trays of doughnuts and cookies.
cookie, table, tray

What are the keywords in the following sentence? medical pills inside falling outside from a huge one isolated on grey
grey, isolate, pill

What are the keywords in the following sentence? A teenager working on homework.
homework, teenager, work