When I said Sacramento, he said that was a coincidence because his Chicago friend spent the summer in Sacramento last year and he lived next door to a doctor who had a tennis court in his backyard.
当我说到萨克拉门托，他说那是个巧合，因为他的芝加哥朋友去年夏天就住在萨克拉门托，并且和一名医生是邻居，这名医生在他的后院里有个私人网球场。
本句中because引导原因状语从句，而在原因状语从句中由and连接两个并列句，第二个并列句还包含一个who引导的定语从句。
