John and Mary were found dead in a room. the only evidence were a table some broken glass and some water. how did they die?

Oh, dude, let me put on my detective hat for this one. So, like, John and Mary were probably fish, right? Because, like, broken glass and water in a room with no other clues? They probably just flopped around too much and, like, suffocated or something. Case closed, Sherlock.