Take the following as truth: All the ground floor windows were shuttered tight, but upstairs, on the first floor (it was a two-storied house) I noticed a window with a light burning and the curtains not drawn.
Then the following statement: "All the ground floor windows were shuttered tight to prepare for the coming storm, but upstairs on the first floor I spotted a light in a window." is true, false, or inconclusive?
Answer: Inconclusive