WordNet sense 1 (an agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders):

Army Intelligence

WordNet sense 2 (the branch of computer science that deal with writing computer programs that can solve problems creatively):

artificial intelligence

WordNet sense 3 (a sloth that has three long claws on each forefoot and each hindfoot):

three-toed sloth, Bradypus tridactylus

WordNet sense 4 (the introduction of semen into the oviduct or uterus by some means other than sexual intercourse):

artificial insemination