Complex sentence: Characterized by a nearly straight, five-sided hood, with a flat top containing a center hinge and two side sloping sections containing the folding hinges, the firewall was flat from the windshield down with no distinct cowl.
Split into simpler sentences: Characterized by a nearly straight, five-sided hood, with a flat top containing a center hinge and two side sloping sections containing the folding hinges. The firewall was flat from the windshield down with no distinct cowl.