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So , we can not urge the son to throttle the essentially healthy and scientific " father " system by fair mean or foul without considering the consequences , because there are problems in its practice and development -- such as state monopoly for purchases and sales , lower efficiency due to centralized management , and inhibition of the will of productivity by undue political pressure resulting from class struggles during the new deal .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
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