What are the names of the technicians that are assigned to repair machines with more point values 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
70'den daha fazla nokta değeri olan makineleri onarmak için atanan teknisyenlerin isimleri nelerdir?