Show names of technicians who are assigned to repair machines with value point more than 70.
SELECT T3.Name FROM repair_assignment AS T1 JOIN machine AS T2 ON T1.machine_id  =  T2.machine_id JOIN technician AS T3 ON T1.technician_ID  =  T3.technician_ID WHERE T2.value_points  >  70
SELECT T3.Name FROM repair_assignment AS T1 JOIN machine AS T2 ON T1.machine_id  =  T2.machine_id JOIN technician AS T3 ON T1.technician_ID  =  T3.technician_ID WHERE T2.value_points  >  70
[{'Name': 'Joe Sewell'}, {'Name': 'Tony Sewell'}, {'Name': 'Joe Sewell'}, {'Name': 'Joe Sewell'}, {'Name': 'Joe Sewell'}, {'Name': 'Joe Sewell'}, {'Name': 'Eddie Collins'}]