Complex sentence: After some successes, the 1943 elected president Santiago Bernabéu decided that the Estadio Chamartín was not big enough for the ambitions of the club, and thus a new stadium was built and was inaugurated on 14 December 1947.
Split into simpler sentences: After some successes, the 1943 elected president Santiago Bernabéu decided that the Estadio Chamartín was not big enough for the ambitions of the club. A new stadium was built and was inaugurated on 14 December 1947.