7913
could be heard on the television broadcast of Barack Obama 's pre-inaugural visit to Baltimore as the national anthem played before his entrance .
 person: Barack Obama; location: Baltimore
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Barack Obama; location: Baltimore