SELECT ipsos_5_16_09 FROM table_name_72 WHERE tns_sofres_5_28_09 = "2.5%"
IPSOS 5/16/09 mana yang memiliki TNS-Sofres 5/28/09 sebesar 2,5%?
CREATE TABLE table_name_72 (ipsos_5_16_09 VARCHAR, tns_sofres_5_28_09 VARCHAR)