Regarding Xiao Wang, Xiao Li and Xiao Zhang, we know that one of them is a lawyer, one is a doctor, and one is a teacher, and we also know that Xiao Zhang is older than the teacher; Xiao Wang and the doctor are different years old and the doctor is younger than Xiao Li.
Which of the followings can be concluded?
Xiao Wang is a teacher. Xiao Li is a lawyer. And Xiao Zhang is a doctor.