SELECT T2.Name FROM journal_committee AS T1 JOIN editor AS T2 ON T1.Editor_ID  =  T2.Editor_ID JOIN journal AS T3 ON T1.Journal_ID  =  T3.Journal_ID WHERE T3.Sales  >  3000
Show the names of editors that are on the committee of journals with sales bigger than 3000.
[Schema (values) (types)]: | journal_committee |  journal : journal_id (text) , date (number) , theme (text) , sales (text) | editor : editor_id (text) , name (number) , age (text) | journal_committee : editor_id (text) , journal_id (number) , work_type (text);