CREATE TABLE table_28138035_27 (womens_singles VARCHAR, year_location VARCHAR)

Who is listed under womens singles when year location is 1998 doha?
SELECT womens_singles FROM table_28138035_27 WHERE year_location = "1998 Doha"
SELECT "womens_singles" FROM "table_28138035_27" WHERE "1998 Doha" = "year_location"