What are the keywords in the following sentence? whitetail deer buck chasing doe as part of the rut
buck, chase, rut

What are the keywords in the following sentence? mold happily grows on cheesy potatoes left in a too warm refrigerator
grow, leave, mold

What are the keywords in the following sentence? students chatting together outside on a sunny day
chat, day, student

What are the keywords in the following sentence? butterfly on a flower in sunny spring day
butterfly, day, flower