Take the following as truth: The Sala del Mappamondo (named after a lost map of the Sienese world painted by Ambrogio Lorenzetti to trace the city's international banking interests) has two great frescoes by the Siena-born master Simone Martini.
Then the following statement: "The Sala del Mappamondo is the only place to contain works by the master Simone Martini." is true, false, or inconclusive?
Answer: Inconclusive