What are the procedures that cost more than 1000 or are specialized in by physician John Wen?
SELECT name FROM procedures WHERE cost  >  1000 UNION SELECT T3.name FROM physician AS T1 JOIN trained_in AS T2 ON T1.employeeid  =  T2.physician JOIN procedures AS T3 ON T3.code  =  T2.treatment WHERE T1.name  =  "John Wen"
procedures that cost more than 1000 refers to cost > 1000; specialized in by physician John Wen refers to a JOIN between physician and procedures through a trained_in table with physician.name = 'John Wen'; UNION is used to combine results from two SELECT statements.