Complex sentence: Cristina Narbona, Doctor of Economy (born 29.7.1951) is a Spanish Socialist Workers' Party politician, since April 18 2004 the Minister of Environment in the government of José Luis Rodríguez Zapatero.
Split into simpler sentences: Cristina Narbona, born 29 July 1951, is a Spanish Socialist Workers' Party politician. Since April 18,2004, she has been the Minister of Environment in the government of José Luis Rodríguez Zapatero.