CREATE TABLE "global_desktop_stats_from_stat_counter_t" (
  "date" text,
  "internet_explorer" text,
  "firefox" text,
  "safari" text,
  "opera" text
);

Question: What percentage of browsers were using Internet Explorer during the period in which 27.85% were using Firefox?
SQL: SELECT "internet_explorer" FROM "global_desktop_stats_from_stat_counter_t" WHERE "firefox"='27.85%';

Question: What percentage of browsers were using Internet Explorer in April 2009?
SQL: SELECT "internet_explorer" FROM "global_desktop_stats_from_stat_counter_t" WHERE "date"='april 2009';

Question: What percentage of browsers were using Safari during the period in which 31.27% were using Firefox?
SQL: SELECT "safari" FROM "global_desktop_stats_from_stat_counter_t" WHERE "firefox"='31.27%';

Question: What percentage of browsers were using Opera in October 2010?
SQL: SELECT "opera" FROM "global_desktop_stats_from_stat_counter_t" WHERE "date"='october 2010';

Question: What percentage of browsers were using Opera in November 2009?
SQL: SELECT "opera" FROM "global_desktop_stats_from_stat_counter_t" WHERE "date"='november 2009';