Question: What actor who starred in the "Back to the Future" trilogy, where he portrayed Marty McFly., hosted an awards show where two networks, A&E and AMC, received their first major nominations that year?
Sentence (from "48th Primetime Emmy Awards"): The 48th Primetime Emmy Awards were held at the Pasadena Civic Auditorium in Pasadena, California.
Relevant evidence: No