user: You will be given a definition of a task first, then some input of the task.
You are given a paragraph, with numbered sentences, and a question. Write the numbers of the sentences needed to answer the given question. Separate multiple sentence numbers with a comma (", "). E.g. "1, 2" would be the correct response if Sent 1 and Sent 2 are needed to answer the given question (do not include sentences that contain no information that is necessary to answer the question). Sort the sentence numbers in an increasing order (i.e., '1, 2', instead of '2, 1'). Your answer should not contain anything than the sentence numbers separated by a comma (e.g. '1, 2, 3, 4'). The given question requires more than one sentence to answer. So, your answer must contain at least one comma (", ").

Paragraph- Sent 1: Not surprisingly, guncite, too, compares data from different years -- as I know from personal experience, it is quite difficult to do comparisons of crime statistics due to differences in reporting frequency and methodology.
Sent 2: The gun homicide rates for the countries Moore mentioned, according to guncite, are: Japan: 0.02 per 100,000 (1994)England/Wales: 0.11 per 100,000 (1997)Germany: 0.22 per 100,000 (1994)Australia: 0.44 per 100,000 (1994)United States: 3.72 per 100,000 (1999) Critics fail to credit Moore with not making the same mistake that some gun control advocates make -- concluding that gun ownership "leads" to violence.
Sent 3: In fact, Moore mentions several counter-examples, and more such counter-examples can indeed be cited.
Sent 4: It is intuitively obvious that guns do not actually cause violence -- but it is equally intuitively obvious that they make the violence that is committed more deadly.
Sent 5: It is the second intuition which gun rights groups like the NRA seek to obscure using fraudulent data by the likes of John "Mary" Lott.
Sent 6: The gun control movement, on the other hand, distracts from the real causes of violence -- poverty, paranoia, the "war on drugs" and antisexuality.
Sent 7: If these causes were addressed, gun ownership in the United States would not be a problem (but also unnecessary); just like it is in Switzerland.
Sent 8: Canada ammunition purchase.
Sent 9: You write: Bowling shows Moore casually buying ammunition at an Ontario Walmart.
Sent 10: He asks us to "look at what I, a foreign citizen, was able to do at a local Canadian Wal-Mart."Sent 11: He buys several boxes of ammunition without a question being raised.
Sent 12: "That's right.
Sent 13: I could buy as much ammunition as I wanted, in Canada.
Sent 14: Canadian officials have pointed out that the buy is faked or illegal.
Sent 15: Once again, you fail to distinguish between regular film editing and "faking" (a word which "Canadian officials" have never used; for such a distortion, Moore would have been boiled alive by his critics).
Sent 16: If Moore simply chose not to show how he revealed his identification to the salesperson, there is nothing fraudulent about that.
Sent 17: He made no claims whatsoever in the film about the need to show or not show identification.
Sent 18: His claim that it is possible to purchase ammunition in supermarkets is independent from that claim. 
Question: Moore claims that you can buy ammunition in grocery stores, but he does NOT claim what?.
Output:

assistant: 17.