Question: How many weeks did the single that entered the charts 14 september 2002 stay on the charts ?
SQL: SELECT COUNT("Weeks on Chart (UK)") FROM "2-1255729-3" WHERE "Entered chart (UK)" = '14 september 2002';

Question: Which single was on the Charts for 23 weeks ?
SQL: SELECT "Title" FROM "2-1255729-3" WHERE "Weeks on Chart (UK)" = 23.0;