310848
On the day of U.S. President Barack Obama 's endorsement of same-sex marriage in May 2012 , Leopold 's political performance of Tchaikovsky Violin Concerto at Lincoln Center was met with both immense critical acclaim and controversy in the classical world .
 person: Barack Obama; person: Leopold
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Barack Obama, Leopold 
Answer:
 person: Barack Obama; person: Leopold