What are the keywords in the following sentence? fish have paired rounded fins supported by a single bone .
bone, fin, fish

What are the keywords in the following sentence? turtles now know where they belong in the tree of life
know, life, tree

What are the keywords in the following sentence? farmer in a combine harvesting a wheat field
combine, farmer, harvest

What are the keywords in the following sentence? modern florist makes bouquet to decorate the hall before holidays
bouquet, florist, holiday