What are the keywords in the following sentence? how to wear garment for summer
garment, summer, wear

What are the keywords in the following sentence? long shot of a farm in the countryside
countryside, farm, shot

What are the keywords in the following sentence? The farmer is plowing his field.
farmer, field, plow

What are the keywords in the following sentence? wing of aircraft in the sky can be seen through the window
sky, window, wing