Complex sentence: Nokia Siemens Networks B.V. is a multinational data networking and telecommunications equipment company headquartered in Espoo, Finland and a joint venture between Nokia of Finland and Siemens of Germany.
Split into simpler sentences: Nokia Siemens Networks B.V. is a multinational data networking and telecommunications equipment company headquartered in Espoo, Finland. It is a joint venture between Nokia of Finland and Siemens of Germany.