Question: When did twinned administrative body of Cork, Shanghai, become the twinned administrative body of Porto, which is the twin of Jena?
Choices:
1997-03-03
1865-02-09
1851
2015-08-12
1975-05-16
1801-02-09
1992-05-07
2004-07-30
1763
1995-01-01