ReteExample

 (defrule example-2	 (defrule example-3
	(x)			(x)
	(y)			(y)
	(z)		  => )
  =>)

For Efficiency:

• Put the most specific patterns (those that will match the fewest facts) near the top of each rule's LHS.
• Put the most transient patterns (those that will match facts that are frequently retracted and asserted) near the bottom of a LHS.

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