The Ariane 4 was in service throughout this period , and conducted most launches , with the Ariane 5 making its first four flights in the second half of the decade .
Head entity: ariane 5 Q18532 17 18
Tail entity: ariane 4 Q18387 1 2
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156