Detailed Instructions: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
Problem:Context: Sven Gerich The information up to 2007 was retrieved from Die Wiesbadener Oberburgermeister seit dem Bau des neuen Rathauses (1886) (The Wiesbaden Mayors since the construction of the new town mayor hall (1886) )
Question: Who became the leader of Wiesbaden?
Solution:
sven gerich