sentences:  Also in December, Ronaldo took a paternity test and was confirmed to be the father of a boy named Alexander, born in April 2005.The boy was born after a brief relationship between Ronaldo and Michele Umezu, a Brazilian waitress who Ronaldo first met in Tokyo in 2002.After the confirmation of his fourth child, Ronaldo stated on 6 December 2010 that he had had a vasectomy, feeling that having four children was enough.