You must determine what the evidence is with respect to each defendant, leaving out of consideration any evidence admitted solely against some other defendant. The fact that you find one of the defendants guilty or not guilty should not control you verdict as to any other defendant. When I instruct you that such an item is for a limited purpose, you must consider it only for that limited purpose. Generally, however, evidence is either direct or circumstantial. Direct evidence is direct proof of a fact, such as testimony about what a witness saw, heard, or did.
Circumstantial evidence is indirect evidence.
It is proof of one or more facts from which one can find another fact. You are allowed to give equal weight to both direct and circumstantial evidence. It's also possible, of course, that a sprinkler system went off, but you should infer the most reasonable explanation in light of your own reason, experience, and common sense. Finally, several courts do not allow the jurors to request playbacks or have access to the transcripts. It's at the judge's discretion to allow note-taking.