试区分以下句子

Do you know the fact that he stole the car?

Do you know the fact that they were talking about?

注意：1. 定语从句，从句是不完整的，关系词充当成分的；而同位语从句中的that只起连接作用。 2. 定语从句是对先行词起修饰作用，而同位语从句则解释说明先行词的具体内容。

(同从)

(定从)