Which authors published papers in 2015 ?
SELECT DISTINCT t1.authorid FROM writes AS t1 JOIN paper AS t2 ON t1.paperid  =  t2.paperid WHERE t2.year  =  2015;
SELECT DISTINCT t1.authorid FROM writes AS t1 JOIN paper AS t2 ON t1.paperid  =  t2.paperid WHERE t2.year  =  2015;
[{'Nenhum': 'Nenhum resultado encontrado'}]