Table: web_browser_usage_5
Columns: date
internet_explorer
firefox
opera
safari
source

Question: Which date has an Opera usage percentage of 5.1% and Internet Explorer usage of 59.5%?
SQL: SELECT "date" FROM web_browser_usage_5 WHERE "opera" = '5.1%' AND "internet_explorer" = '59.5%'

Question: Which source has a date of June 2008?
SQL: SELECT "source" FROM web_browser_usage_5 WHERE "date" = 'june 2008'

Question: Which source date has an Internet Explorer usage of 60.2%?
SQL: SELECT "source" FROM web_browser_usage_5 WHERE "internet_explorer" = '60.2%'