What are the keywords in the following sentence? add some natural freshness to the beautiful bathroom
add, bathroom, freshness

What are the keywords in the following sentence? sculpture at the plaza in front of art museum
front, plaza, sculpture

What are the keywords in the following sentence? a yacht moored up off a city on the coast
coast, moor, yacht

What are the keywords in the following sentence? combined harvester harvesting a crop of maize in a rural environment
harvest, harvester, maize