the first two movies were silent films made in 1901 为什么 这个句子

这个句子中没有两个谓语,只有一个谓语,即
主语：the first two movies
谓语（系动词）were
表语：silent films
后置定语：made in 1901
也就是说,made in1901 不是谓语,是过去分词作后置定语,修饰前面的silent films
这句话相当于一个定语从句,即
The first two movies were silent films which/that were made in 1901.
在这个定语从句中先行词是silent films,是物,所以用关系代词which或that引导
翻译：最早的两部电影是1901年出品的无声电影.
有不明白的请继续追问,