Complex sentence: In 2002, the Tōhoku Shinkansen was further extended from Morioka to Hachinohe and the operations of the local track segment between those two cities was turned over to Iwate Ginga Railway (IGR) and Aoimori Railway.
Split into simpler sentences: In 2002, the Tōhoku Shinkansen was further extended from Morioka to Hachinohe and the operations of the local track segment between those two cities was turned over to two other companies. The former JR Tōhoku Main Line between Morioka and Hachinohe is now owned by Iwate Ginga Railway (IGR) and Aoimori Railway.