英语翻译

题目

英语翻译
The video used to promote it was even claimed to trigger seizures in a few people.
it was even claimed to trigger seizures in a few people.这个是什么成分?
The organizers of the Games are keen to avoid another controversy like the one that surrounded the unveiling of the puzzle-style Olympic logo in 2007.It was criticized by a skeptical British public.The video used to promote it was even claimed to trigger seizures in a few people这是上下文

答案

主句：The video used to promote 宾语从句：it was even claimed to trigger seizures in a few people 1. it 先行主语,指代拖后的不定式短语 to trigger seizures in a few people （在少数人中引发查封行为） ...