What are the keywords in the following sentence? rows of salad and a blue sky on a field
field, row, sky

What are the keywords in the following sentence? The man then adds gold lame fabric stuck in at various points behind the mesh.
add, fabric, mesh, point, stick

What are the keywords in the following sentence? shot of a surgeon looking at a monitor in an operating room
look, monitor, surgeon

What are the keywords in the following sentence? planes fly around the globe
fly, globe, plane