What was the start and finish time of the Boeing 747 which was operated by Air Algerie?
SELECT ?value1 ?value2 WHERE { wd:Q179 p:P137 ?s . ?s ps:P137 wd:Q406764 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }
boeing 747: Q179 air algérie: Q406764