Table: tourism_rankings_4
Columns: rank
country
unwto_region
international_tourism_expenditure_2012
international_tourism_expenditure_2011

Question: Which International tourism expenditure (2012) has an International tourism expenditure (2011) of $33.3 billion?
SQL: SELECT "international_tourism_expenditure_2012" FROM tourism_rankings_4 WHERE "international_tourism_expenditure_2011" = '$33.3 billion'

Question: What is Italy's UNWTO region?
SQL: SELECT "unwto_region" FROM tourism_rankings_4 WHERE "country" = 'italy'

Question: What is China's  International tourism expenditure (2011)?
SQL: SELECT "international_tourism_expenditure_2011" FROM tourism_rankings_4 WHERE "country" = 'china'