Complex sentence: Over 260 Catholic theologians, particularly from Germany, Switzerland and Austria (including Hans Kung), signed in January and February 2011 a memorandum, called "Church 2011", which called for more ecclesiastical respect for gay couples who live in civil unions.
Split into simpler sentences: Over 260 Catholic theologians, particularly from Germany, Switzerland and Austria (and including Hans Kung), signed in January/February 2011 a memorandum "Church 2011". It called for more ecclesiastical respect for gay couples, who live in civil unions.