CREATE TABLE table_name_3 (district VARCHAR(255), weblink VARCHAR(255), college_or_campus_name VARCHAR(255))
In which district is anna university - tiruchirappalli campus, whose website is http://www.annauniv.edu, located?
    
SQL: SELECT district FROM table_name_3 WHERE weblink = "http://www.annauniv.edu" AND college_or_campus_name = "anna university - tiruchirappalli campus"