Table schema:
CREATE TABLE repair_assignment (machine_id VARCHAR, technician_ID VARCHAR); CREATE TABLE machine (machine_id VARCHAR, quality_rank VARCHAR); CREATE TABLE technician (Name VARCHAR, technician_ID VARCHAR)

Question: Show names of technicians in ascending order of quality rank of the machine they are assigned.
SQL: 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 ORDER BY T2.quality_rank