user: Question: What is the ethnic majority in the only town?
Columns: ['Settlement', 'Cyrillic Name Other Names', 'Type', 'Population (2011)', 'Largest ethnic group (2002)', 'Dominant religion (2002)']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Bač', 'Бач', 'town', 5399.0, 'Serbs', 'Orthodox Christianity']
SQL:

assistant: SELECT "Largest ethnic group (2002)" FROM "Table" WHERE "Type" = 'town';