I'm putting together a query letter and one of the items I've been advised to include is mention of the target audience or market segment. I've tried to get information about market segmentation in the fiction book industry, but I can't find anything refined enough to know exactly where to play my book. For instance, "Young Adult" doesn't seem appropriate given some of the themes within the manuscript. I think the manuscript/book would appeal to anyone from ages 13 and up. But what is the name for that demographic? Perhaps, this might help. What would one say is the target audience for A Song of Ice and Fire? The protagonists are young adults, but the subject matter is very much adult. Is it a simple matter of just stating "13+" or borrowing from the MPAA's film rating system to say "PG-13"? Or is there a specific name for that segment that I'm missing? Thanks in advance!