Take the following as truth: Brunelleschi is at his most elegant in the Old Sacristy at the end of the left transept (site of a few Medici tombs), decorated with four Donatello wall-medallions (the artist himself is buried in the left transept).
Then the following statement: "Brunelleschi spent seven years designing the Old Sacristy." is true, false, or inconclusive?
Answer: Inconclusive