Complex sentence: Wil Schuurman and Cor Zonneveld joined Janmaat in parliament and even though they tried to be more varied, the'foreigner issue' remained central to the party's rhetoric, both inside and outside of the parliament.
Split into simpler sentences: Wil Schuurman and Cor Zonneveld joined Janmaat in parliament. Although trying to be more varied, the'foreigner issue' remained central to the party's rhetoric, both inside and outside of the parliament.