Ptolemy I had originally supported the establishment of his friend Seleucus I as ruler of Mesopotamia , but relations had cooled after the Battle of Ipsos in 301 BC , when both kings claimed Syria .
PROPN PRON AUX ADV VERB DET NOUN ADP PRON NOUN PROPN PROPN ADP NOUN ADP PROPN , CCONJ NOUN AUX VERB ADP DET PROPN ADP PROPN ADP NUM PROPN , ADV DET NOUN VERB PROPN .