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

Seizure 在这句子中是指“癫痫”或“抽搐”的意思。
这句子的原意是关于伦敦2012奥运会吉祥物的怪模样因此很多英国人的批评。因此，甚至有些人宣称2012 奥运吉祥物的宣传短片引发一些人癫痫病发。

是一个句子吗？请问有上下文吗？
这个it 是指什么呢？
如果是一个句子，找不出it是指代什么，译不了。
但是句子的成分，同意西元之神的分析。

宾语

used to promote it是定语
The video主语
was even claimed to trigger serzures是不定式做宾语
谓语是claim，这里是被动语态

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） ...