Complex sentence: The idea for elder cohousing originated in Denmark, where intergenerational cohousing was successfully implemented; intergenerational housing communities are planned, owned, and managed by the residents, who all share in many daily activities together.
Split into simpler sentences: The idea for elder cohousing originated in Denmark, where intergenerational cohousing was successfully implemented. The community is planned, owned, and managed by the residents who all share in many daily activities together.