Anchor: If i = j, then it is the own-price elasticity of demand, otherwise magnitude is called the cross-price elasticity of demand.
Entailed:  If i = j, then it is the own-price elasticity of demand
Contradiction:  If i =/ j, then it is the own-price elasticity of demand
Contradiction: Three people slide down a rock.
Contradiction: Two women are walking.
Contradiction: The hotel has a completely different name.
Contradiction: We understand all of that.