Problem: Helmut Gro was the mayor of Tengen from 1973 to 2015 , and his successor was Marian Schreier .
From 1973 to 2015 , Marian Schreier was the mayor of Tengen . His successor is Helmut Gro .
OPTIONS:
- no
- yes
-+-
A: no

Problem: Dong Zhao was a '' xiaolian '' and served as a county official in his early years under the warlord Yuan Shao before being promoted to a military adviser .
Dong Zhao was a '' Xiaolian '' and in his early years served as district official under the warlord Yuan Shao before being promoted to a military consultant .
OPTIONS:
- no
- yes
-+-
A: yes

Problem: Ignatius Bonomi began his training in the office of architect Prosser ( 1787-1870 ) in Durham .
Prosser began his training in the office of the architect Ignatius Bonomi ( 1787-1870 ) in Durham .
OPTIONS:
- no
- yes
-+-
A:
no