What are the keywords in the following sentence? a ferry coming into port in harbour during sunset
come, ferry, port, sunset

What are the keywords in the following sentence? charged atoms the number of protons determines the element .
atom, element, number, proton

What are the keywords in the following sentence? postmodern structure showing modern architecture and a city
architecture, city, structure

What are the keywords in the following sentence? the fire broke out from the first floor of the hotel .
break, fire, floor