CREATE TABLE authors (authid NUMBER, lname CLOB, fname CLOB)
CREATE TABLE inst (instid NUMBER, name CLOB, country CLOB)
CREATE TABLE papers (paperid NUMBER, title CLOB)
CREATE TABLE authorship (authid NUMBER, instid NUMBER, paperid NUMBER, authorder NUMBER)

Which authors have last name 'Ueno'? List their first names.
SELECT fname FROM authors WHERE lname = "Ueno"
SELECT "fname" FROM "authors" WHERE "Ueno" = "lname"