show the names of editors that are on at least two journal committees?
select t1.name from editor as t1 join journal_committee as t2 on t1.editor_id = t2.editor_id group by t1.name having count ( * ) > = 2
what is the work type of Kamila Porczyk?
select t2.work_type from editor as t1 join journal_committee as t2 on t1.editor_id = t2.editor_id where t1.name = "Kamila Porczyk"
how much years old is Anna Powierza ?
select t1.age from editor as t1 where t1.name = "Anna Powierza"
what is the work type of Anna Powierza?
select t2.work_type from editor as t1 join journal_committee as t2 on t1.editor_id = t2.editor_id where t1.name = "Anna Powierza"