What are the keywords in the following sentence? ferries carry passengers to the continent .
carry, ferry, passenger

What are the keywords in the following sentence? village with an ancient church in the mountains
church, mountain, village

What are the keywords in the following sentence? number of electrons all neutral atoms have the same number electrons as protons .
atom, electron, number, proton

What are the keywords in the following sentence? The player tries to prevent his opponent from scoring.
player, prevent, scoring