SELECT district FROM table_name_3 WHERE weblink = "http://www.annauniv.edu" AND college_or_campus_name = "anna university - tiruchirappalli campus"
Di distrik manakah Universitas Anna - kampus Tiruchirappalli, yang situs webnya http://www.annauniv.edu, berlokasi?
CREATE TABLE table_name_3 (district VARCHAR, weblink VARCHAR, college_or_campus_name VARCHAR)