Table: house_of_blues_venues
Columns: metro_vincity
venue_location
address
opened
capacity

Question: What metro vincity has the venue that opened in 1999?
SQL: SELECT "metro_vincity" FROM house_of_blues_venues WHERE "opened" = '1999'

Question: What is the total capacity of venues that opened in 1999?
SQL: SELECT COUNT("capacity") FROM house_of_blues_venues WHERE "opened" = '1999'