What are the keywords in the following sentence? A railroad track traveling along side of a rocky hillside.
side, track, travel

What are the keywords in the following sentence? those are trees growing on a small island on an abandoned boat .
abandon, boat, tree

What are the keywords in the following sentence? electric cars can be charged with the power from your own solar carport or rooftop .
car, charge, power

What are the keywords in the following sentence? the morning sun rises through a bank of thick fog .
bank, fog, sun