Question: Which city's southern suburbs were the location of an electoral district which lost Labor-voting areas to Victoria Park, Canning and Welshpool, and became substantially safer for the major political party in Australia founded in 1945?
{'answer': 'Perth', 'supporting_facts': [['Electoral district of Clontarf', 0], ['Electoral district of Clontarf', 1], ['Electoral district of Clontarf', 2], ['Liberal Party of Australia', 0], ['Liberal Party of Australia', 1]]}