Complex sentence: He became a member of the "Agrupación Socialista Madrileña" (the socialist circle in Madrid) in 1912 and in that same year he was offered the Chair of Fundamental Logic in the Faculty of Philosophy and Letters.
Split into simpler sentences: He became a member of the "Agrupación Socialista Madrileña" (the socialist circle in Madrid) in 1912. That year he was offered the Chair of Fundamental Logic in the Faculty of Philosophy and Letters.