7341
that is when american airlines flight 903 ran into trouble on a trip from boston to miami .
 boston, miami, american airlines, american airlines flight 903
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 boston, miami, american airlines, american airlines flight 903