#Knowledge Base
Knowledge_Base1 = [("Bob","Human"),("Bob","Male"),("Human","Mortal"),("Human","Alive"),("Rock","Material"),("Kate","Human"),("Kate","Female")]

Knowledge_Base2 = [("Pipe is Hot","Water is Hot"),("Water is Hot","Boiler is Working"),("Pipe is Cold","Water is Cold"),("Water is Cold","Boiler is Broken"),("Boiler is Broken","Boiler needs Fixing"),("Boiler needs Fixing","Call Repairman")]
