Implies (Antecedent (
                      swrlb:substract (2 I-variable(deliveryDay) I-variable(orderDay))
                      I-variable(hour) swrlb:greaterThanOrEqual 7
                      I-variable(hour) swrlb:lessThanOrEqual 20
                      I-variable(continent) swrlb:equal (http://en.wikipedia.org/wiki/North_america)
                      I-variable(weight) swrlb:lessThanOrEqual 50
                    )
Implies (Antecedent (
                      swrlb:substract (2 I-variable(deliveryDay) I-variable(orderDay))
                      I-variable(hour) swrlb:greaterThanOrEqual 7
                      I-variable(hour) swrlb:lessThanOrEqual 20
                      I-variable(continent) swrlb:equal (http://en.wikipedia.org/wiki/Europe)
                      I-variable(weight) swrlb:lessThanOrEqual 50
                    )