What are the keywords in the following sentence? butterflies in a tropical garden eat pollen from flowers
butterfly, eat, flower, garden

What are the keywords in the following sentence? volcanic mountains tower above buildings in the town on the coast
building, coast, town

What are the keywords in the following sentence? fourth bathroom located in the upstairs twin bedroom with shower
bathroom, locate, shower

What are the keywords in the following sentence? an old and rusty bridge in need of infrastructure repair and maintenance
bridge, maintenance, repair