Database: museum_visit
Question: What is the name of the visitor who visited both a museum opened before 2009 and a museum opened after 2011?
SQL: select t1.name from visitor as t1 join visit as t2 on t1.id  =  t2.visitor_id join museum as t3 on t3.museum_id  =  t2.museum_id where t3.open_year  <  2009 intersect select t1.name from visitor as t1 join visit as t2 on t1.id  =  t2.visitor_id join museum as t3 on t3.museum_id  =  t2.museum_id where t3.open_year  >  2011