Generate a correct and concise answer for the question based on the words in the context.
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Question: Context : Jathibhanga massacre (Bengali: জাঠিভাঙ্গা হত্যাকান্ড) was a massacre of the emigrating Bengali population in the Jathibhanga area of Shukhanpukuri Union under Thakurgaon sub-division of greater Dinajpur district on 23 April 1971 by the Pakistani Army in collaboration with the Razakars. 
Question : On what date did Jathibhanga massacre take place?

Answer: 23 April 1971


Question: Context : Olaf Wildeboer Faber (born March 4, 1983 in Sabadell, Catalonia, Spain) is a freestyle swimmer. 
Question : What city is Olaf Wildeboer from?

Answer: Sabadell


Question: Context : Sven Gerich The information up to 2007 was retrieved from Die Wiesbadener Oberbürgermeister 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?

Answer:
Sven Gerich