SCHEMA:
CREATE TABLE Services (Workshop_Group_ID VARCHAR); CREATE TABLE Drama_Workshop_Groups (Store_Phone VARCHAR, Store_Email_Address VARCHAR, Workshop_Group_ID VARCHAR)
USER:
What are the phones and emails of workshop groups in which services are performed?

QUERY:
SELECT T1.Store_Phone, T1.Store_Email_Address FROM Drama_Workshop_Groups AS T1 JOIN Services AS T2 ON T1.Workshop_Group_ID = T2.Workshop_Group_ID