sentences:  The Cabinet Balkenende III was replaced by the Cabinet Balkenende IV on 22 February 2007.Following the end of his active political career, Winsemius again returned to the private sector and the public sector and resumed his previous positions (Vereniging Natuurmonumenten, Energy Research Centre, Stichting Pensioenfonds ABP and the Scientific Council for Government Policy) and as an advocate, lobbyist and activist for Conservation, Environmentalism, Sustainable development and Climate change issues.Winsemius is the son of economist Albert Winsemius.