1.  

She was trying a coat, ____ was two sizes smaller than hers.

2.  

Alex, ____ only came to Germany last year, speaks German like a native.

3.  

The front-right tire, ____ had been flat for the last 3 km, had to be changed.

4.  

The Lady, ____ you just called “ignorant”, is a professor of Physics at Harvard.

5.  

The burglars stole the files ____ revealed their own identities.