Common Core Standards
Grade 4
Reading RI.4.1
Refer to details and examples in a text when explaining what the text says explicitly and when drawing inferences from the text.
This standard and its Reading: Literature counterpart are no different (wow, those Common Core people were pretty lazy, weren't they?), so go on over there to check out what we have to say about this one. Just don't forget that we're talking about non-story stuff as opposed to, well, story stuff.