SELECT fname FROM authors WHERE lname = "Ueno"
Which authors have last name 'Ueno'? List their first names.
CREATE TABLE authors (
    authid number,
    lname text,
    fname text
)

CREATE TABLE inst (
    instid number,
    name text,
    country text
)

CREATE TABLE papers (
    paperid number,
    title text
)

CREATE TABLE authorship (
    authid number,
    instid number,
    paperid number,
    authorder number
)