Am I diagramming wrong?

For Practice question 4 here: Instead of splitting up the two S&N statements, I first turned those into a transitive chain: A --> EX --> EXT And then, used SP - some - A to build a further transitive chain from which I am making deductions. This chain looks like this: SP-some-A --> EX --> EXT It allows me to get the correct answer choice on this particular question, but I'm not sure if this method will hurt me in the future on different types of questions. For some reason, this is just how my brain works on problems like these, so if I can continue to use this method that would be awesome. Thanks!