Simplify the following text for a Grade 8 native English-speaking person.
Original: He finished second at Silverstone and fourth at Hockenheim , while in Hungary , Hamilton qualified fifth but retired during the race due to gearbox problems , losing the championship lead to Webber .
Simplified: He finished second at Silverstone and fourth at Hockenheim . In Hungary , Hamilton qualified fifth but retired during the race due to engine problems .