Question: Intimidator 305 and Thunder Dolphin are what type of roller coaster?
Sentence (from "Thunder Dolphin"): Following an incident in which a 25 cm long bolt fell from the ride while in motion on 5 December 2010, injuring a 9-year-old visitor, operation of the ride was suspended until 1 August 2013, when the ride reopened.
Relevant evidence: No