Complex sentence: Yueh, in revenge against the Baron for killing his wife, provided Leto with a false tooth filled with poison gas, designed to kill those nearby when Leto bit down on the tooth and exhaled, in the hope that he would manage to kill the Baron.
Split into simpler sentences: Yueh, in revenge against the Baron for killing his wife, provided Leto with a false tooth filled with poison gas. It was designed to kill those nearby when Leto bit down on the tooth and exhaled, in the hope that he would manage to kill the Baron.