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That the Columbia Medical Company purchased two hospital groups within one month last year , thus integrating pharmaceuticals , medical treatment and sales , is one such example .
 the Columbia Medical Company, two, within one month last year, one
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 the Columbia Medical Company, two, within one month last year, one