Text: Boudhanath, 6 km (4 miles) northeast of the city center, is the valley's second important stupa and is similar in many ways to Swayambhunath.
Entailment: Boudhanath and Swayambhunath are in the same valley and share similarities.
Contradiction: Boudhanath and Swayambhunath are not located in the same area.