SELECT t1.lname 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  =  "Binders Unbound"
Who is the author of the paper titled "Binders Unbound"? Give me the last name.
SELECT t1.lname 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 = `` Binders Unbound ''
select t1 . lname 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 = value
Who is the author of the paper titled `` Binders Unbound '' ? Give me the last name .