I want to go to the building ( )the colour is green

问题描述:

I want to go to the building ( )the colour is green

of which
=I want to go to the building 【whose】colour is green为什么不可以用whichwhich 仅仅只代替先行词 the building 没法单独表示 the building 和定语从句中the colour 之间的所属关系, 即 这栋楼的颜色, 可见要有of of which= whose