user: Question: What is the attendance of the Western Conference Finals series?
Columns: ['Date', 'Opponent', 'Score', 'Leading Scorer', 'Attendance', 'Series']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Western Conference Semifinals', 'Western Conference Semifinals', 'Western Conference Semifinals', 'Western Conference Semifinals', 'Western Conference Semifinals', 'Western Conference Semifinals']
SQL:

assistant: SELECT SUM("Attendance") FROM "Table" WHERE "Series" = 'Western Conference Finals';