Sentence:With five of the six classes being a single credit hour and the sixth being three credit hours of capstone design, sophomores, juniors, and seniors work directly with medical doctors, nurses, graduate students, Ph.D.'s, and [e1]engineers[/e1] from the [e2]medical industry[/e2].
 e1: engineers. 
 e2 : medical industry.
Answer: Entity-Origin(e1,e2)