Complex sentence: Pio Laghi (21 May, 1922--11 January, 2009) was an Italian Cardinal of the Catholic Church, whose service has been limited to the diplomatic service of the Holy See and to the Roman Curia.
Split into simpler sentences: Pio Laghi (21 May, 1922--11 January, 2009) was an Italian Cardinal of the Catholic Church. His service was primarily in the diplomatic service of the Holy See and the Roman Curia.