There are the following conditions: (1) If Xiao Wang is a worker, then Xiao Zhang is not a doctor; (2)Or Xiao Li is a worker, or Xiao Wang is a worker; (3) If Xiao Zhang is not a doctor, then Xiao Zhao is not a student; (4) Or Xiao Zhao is a student, or Xiao Zhou is not a manager
Xiao Zhou is not a manager