['they', 'introduce', 'themselves', 'Hayes', 'as']
['<PRP>', 'establish-55.5', '<PRP>', '<PERSON>8', 'as']
They introduce themselves as Major Hayes, Sergeant Kemper, and Corporals Romero and Chang.
<PRP> introduce <PRP> as <PERSON>8 Hayes, <PERSON>9 Kemper, and <PERSON>10 and <PERSON>11.