Complex sentence: Mario Ferri worked hard, first as a community lobbyest and later as a representative of the City of Vaughan Municipal Council, to attain guarantees that the life of the Landfill Site would not be extended.
Split into simpler sentences: Mario Ferri worked hard first as a community lobbyest and later as a representative of the City of Vaughan Municipal Council. To attain guarantees that the life of the Landfill Site would not be extended.