premise: Fortuna Sittard is a football club in Sittard, The Netherlands. The club currently plays its football in the 12,500 capacity Fortuna Sittard Stadion and features in the Dutch Eerste Divisie. The club was a merger of former clubs 'Fortuna 54' and 'Sittardia' who merged as the Fortuna Sittardia Combinatie on 1 July 1968.
hypothesis: If 12,500 people came to see Fortuna Sittard play at home, it would be a sell-out crowd.
reason: It states that Fortuna Sittard's home stadium has a capacity of 12,500, so 12,500 would be a sell-out crowd.