Complex sentence: Arsenal's Champions League match against FC Porto in the first leg did not go so well; played at the Estádio do Dragão in Porto on 17 February 2010, the first goal was scored by the home side.
Split into simpler sentences: Arsenal's Champions League match against FC Porto in the first leg did not go well. Played at the Estadio do Dragao on February 17,2010, the first goal was scored by the home side.