Take the following as truth: The great Buddha seated in the domed stupa is worshiped by Hindu artisans as Visvakarma, carpenter of the gods, so the sanctuary is known as the Cave of the Carpenters. 
Then the following statement: "The sanctuary is known as the Cave of the Carpenters because the great Buddha seated in the domed stupa was worshiped by Hindu artisans as Visvakarma." is true, false, or inconclusive?