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He received word of his son ' s death within hours after the submarine that he was assigned to returned home from an extended deployment .
 person: He; person: his; person: his son; person: he; vehicle: the submarine that he was assigned to; vehicle: that; location: home
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 person: He; person: his; person: his son; person: he; vehicle: the submarine that he was assigned to; vehicle: that; location: home