Confusing math problemm!!?

Mr. Poe, Mr. Ennis, and Mr. Lee are a salesman, a lawyer, and a doctor, but not necessarily in that order. The lawyer as Mr. Ennis as a client and is a neighbor of Mr. Poe. Mr. Lee is a neighbor of Mr. Poe. Mr. Lee is not the salesman. Mr. Poe is a patient of the doctor. Who does what?