What are the keywords in the following sentence? isotopes all atoms of element have the same number of protons .
atom, element, number

What are the keywords in the following sentence? A church with a round clock and two bells.
bell, church, clock

What are the keywords in the following sentence? A hand reaches into the ground and plucks a mushroom from the ground.
hand, mushroom, reach

What are the keywords in the following sentence? small blue boat on the snowy coast in winter
boat, coast, winter