What are the keywords in the following sentence? A clock in the tower of a city building.
building, clock, tower

What are the keywords in the following sentence? A pizza with burnt crust on a table
burn, crust, pizza

What are the keywords in the following sentence? biological species eating fish on frozen lake
eat, fish, lake, specie

What are the keywords in the following sentence? flowers and floating candles in a fish bowl
candle, float, flower