What are the keywords in the following sentence? the rainforest is an important habitat for protected species .
protect, rainforest, specie

What are the keywords in the following sentence? An elephant being directed into a cage on a field.
cage, elephant, field

What are the keywords in the following sentence? ceremonial soldier standing at ease during an official ceremony
ceremony, soldier, stand

What are the keywords in the following sentence? pediatric dentist examining a little boys teeth with his assistant
assistant, examine, tooth