Marife: That was a bad movie because, by not providing viewers with all the information necessary for solving the murder, it violated a requirement of murder mysteries.
Marife's 1st Claim
That was a bad movie Does N argue it wasn't bad (it was good)?
Not quite. We can't really derive N's opinion about whether or not this movie was good overall.
Marife's 2nd Claim
It didn't provide viewers with all the information necessary to solve the murder. Does N argue that it did provide enough info?
No, it almost seems more like N is agreeing to this idea.
Marife's 3rd Claim
Not providing viewers with enough info to solve the murder is a violation of a requirement of murder mysteries. Does N argue that it isn't a requirement of murder mysteries to provide enough info to solve the murder?
No, N doesn't say anything like that.
Evaluate
Since we got through all of Marife's explicit claims and didn't find any disagreement from Nguyen, we turn to ask ourselves,
M's argument says, because that movie violated a requirement of murder mysteries, we can conclude that was a bad movie.
What is M assuming there? - this movie was a murder mystery - if you violate a requirement of the genre you're in, then you're automatically a bad movie
Does N object to either of these ideas? Is N arguing either of these claims? - this movie was not a murder mystery - you can violate a requirement of the genre, but still be a not-bad movie
Yes! It seems like N is arguing that the move was not a murder mystery, since he says that the murder just provided context and should not be taken as a defining characteristic of the film.
Goal
Let's look for an answer saying something like, .