{ "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://rocketcert.com/" }, { "@type": "ListItem", "position": 2, "name": "Books", "item": "https://rocketcert.com/books" }, { "@type": "ListItem", "position": 3, "name": "Courses", "item": "https://rocketcert.com/books/courses" }, { "@type": "ListItem", "position": 4, "name": "National Standard Master Gas Pipe Fitter (F33) Online Exam Prep", "item": "https://rocketcert.com/books/national-standard-master-gas-pipe-fitter-f33-exam-prep-detail" } ] }