<s>[INST] The next text is a question of a member of the European parliament:"It appears that the refuse problem in Naples has been resolved in the medium-term following the landfill of 4/5 of the 200000 tonnes of waste.   The solutions proposed, however, do not provide for a long-term resolution of the problem as it was necessary to call on Germany for help and the rubbish bins do not meet the latest environmental standards.  What is the long-term solution to the city's refuse problem if a recurrence in the very near future of the situation in December 2007, with its threat to public health, is to be prevented?"
Analyze carefully the text and assign it to the most relevant policy area among those listed below. Do not explain your answer and return only a number.
Policy area numbers: 1 = Macroeconomics
2 = Civil Rights, Minority Issues and Civil Liberties
3 = Health
4 = Agriculture and Fisheries
5 = Labour, employment and pensions
6 = Education
7 = Environment
8 = Energy
9 = Immigration
10 = Transportation
12 = Law and Crime
13 = Social welfare
14 = Regional and Urban issues and Planning
15 = Banking, finance and domestic commerce issues
16 = Defence
17 = Space, science, technology, and communications issues
18 = Foreign trade
19 = International affairs and foreign aid
20 = Governance and government
21 = Public Lands, Water Management and Territorial Issues
23 = Culture and media
[/INST]. Answer = [7]. </s>
It appears that the refuse problem in Naples has been resolved in the medium-term following the landfill of 4/5 of the 200000 tonnes of waste.   The solutions proposed, however, do not provide for a long-term resolution of the problem as it was necessary to call on Germany for help and the rubbish bins do not meet the latest environmental standards.  What is the long-term solution to the city's refuse problem if a recurrence in the very near future of the situation in December 2007, with its threat to public health, is to be prevented?