How many nationalities does Alex Nikolic come from?
CREATE TABLE table_2897457_7 (nationality VARCHAR, player VARCHAR)
SELECT COUNT(nationality) FROM table_2897457_7 WHERE player = "Alex Nikolic"
### Context: CREATE TABLE table_2897457_7 (nationality VARCHAR, player VARCHAR) ### Question: How many nationalities does Alex Nikolic come from? ### Answer: SELECT COUNT(nationality) FROM table_2897457_7 WHERE player = "Alex Nikolic"