47BCE:CleopatrabecomesCaesar'smistressandCaesaruseshisarmytodefeatanddestroyCleopatra'srivalforpowerinEgypt,herbrother-husbandPtolemyXIII.PtolemyXIIIdiesofdrowningwhiletryingtoescapethefieldofbattle.CaesarestablishesCleopatraandanotheryoungerbrother,PtolemyXIV,astherulersofEgypt.CaesarreturnstoRome.

Please segment the words:
47 BCE: Cleopatra becomes Caesar's mistress and Caesar uses his army to defeat and destroy Cleopatra's rival for power in Egypt, her brother-husband Ptolemy XIII. Ptolemy XIII dies of drowning while trying to escape the field of battle. Caesar establishes Cleopatra and another younger brother, Ptolemy XIV, as the rulers of Egypt. Caesar returns to Rome.