1Here are the farmers,who discovered the underground city last month.
2.I don't know the reason why he got so angry.
3.The woman remembered the day when She saw Nazis burying something near her home.
4.I remember the soldier,who told me not to tell anyone what I had seen.
5.Xi'an is one of the few cities with city walls,whose walls remain as good as before.
6.Shaanxi Province is a place with many cultural relics,which are well looked after.