Take the following as truth: The National Theater is located here, and across the road is the Estado do Rossio (with trains to Sintra and other places), which looks something like a Moorish palace with horseshoe arches, just west of the square.
Then the following statement: "The National Theater is across from Estado do Rossio and you can get there via underground tunnel." is true, false, or inconclusive?
Answer: Inconclusive