a land rover and trailer careered off the M62 motorway near Selby and plunged down an embankment onto a railway where it was struck by train that then derailed and was then hit by a freight train travelling in the opposite direction.

정확한 구문분석 도와주세요 자세하게ㅜㅜ
특히 관계부사where 뒤부터 막히네요ㅠㅠ