Complex sentence: Ratón ("Mouse " in English) is a Spanish bull who has been nicknamed"el toro asesino" (the killer bull) for killing three people in the bullfighting ring between 2006--2011.
Split into simpler sentences: Ratón ("Mouse " in English) is a bull living in Spain. He has been nicknamed"el toro asesino" (the killer bull) for killing three people in the bullfighting ring between 2006--2011.