SELECT t1.fname FROM authors AS t1 JOIN authorship AS t2 ON t1.authid = t2.authid JOIN papers AS t3 ON t2.paperid = t3.paperid WHERE t3.title LIKE "%Functional%"
Find the first names of all the authors who have written a paper with title containing the word 'Functional'.
CREATE TABLE papers (
    paperid number,
    title text
)

CREATE TABLE authors (
    authid number,
    lname text,
    fname text
)

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

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