Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_51129 ( "Week" real, "Date" text, "Opponent" text, "Result" text, "Attendance" real )

### Question ###
What was the attendance at the game where the opponent was the denver broncos?

### Accurate SQL ###

SELECT "Attendance" FROM table_51129 WHERE "Opponent" = 'denver broncos'