Question: After the worst rail disaster in Australian history, who was legislated as the combat authority for responding to major structural collapse incidents within the state of New South Wales?
Sentence (from "Alister McMullin"): Sir Alister Maxwell McMullin, {'1': ", '2': ", '3': ", '4': "} (14 July 1900 – 7 August 1984) was an Australian politician.
Relevant evidence: No