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" kids being able to walk into gun stores and get AR-15s and shoot up their schools " - {@Morning Joe@} {{URL}} Please cite any case of a minor purchasing an AR-pattern rifle in a gun store and committing a school shooting in US . {@NewsBusters@}
 AR-15s, Morning Joe, AR-pattern rifle, US, NewsBusters
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 AR-15s, Morning Joe, AR-pattern rifle, US, NewsBusters