prob jack: 5/7.
prob averall: 5/7.
-joeWorks <- joe.
-jackWorks <- jack & joe.
-williamWorks <- william.
-averallWorks <- averall & jack & william.
-
-burglary <- joeWorks & jackWorks.
-burglary <- joeWorks & williamWorks.
-burglary <- joeWorks & averallWorks.
-burglary <- jackWorks & williamWorks.
-burglary <- jackWorks & averallWorks.
-burglary <- williamWorks & averallWorks.
+burglary <- joe & jack.
+burglary <- joe & william.
+burglary <- joe & william & jack.
+burglary <- joe & william & jack & averall.