<s>[INST] The next text is a question of a member of the European parliament:"Sicilian wheat producers are currently facing serious difficulties, largely as a result of the indiscriminate entry through ports all over Europe, such as Rotterdam, Marseilles and Hamburg, of low-quality wheat from third countries that often contains prohibited substances as well as glyphosate.   Once a vessel has been admitted, to Rotterdam for example, its cargo of wheat can move freely throughout theEU, being transported by internal carriers as EU cargo into Italian territory, bypassing Italian controls.   The Italian customs authorities indicate that health and customs controls at their national border are more stringent than those carried out at European ports, which are called upon to deal with larger third-country wheat import volumes and are failing to carry out adequate sampling.   In Italy, all third-country wheat is subjected to sampling, while only sporadic checks are carried out on EU wheat.   In view of this:      1.  Can the Commission say what checks are carried out on wheat arriving in European ports?      2.  Are the ports of arrival properly equipped to detect glyphosate?       3.  Are port authorities required to carry out specified minimum checks in percentage terms or is this being left to their discretion and that of the Member States in question?"
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 = [4]. </s>
Sicilian wheat producers are currently facing serious difficulties, largely as a result of the indiscriminate entry through ports all over Europe, such as Rotterdam, Marseilles and Hamburg, of low-quality wheat from third countries that often contains prohibited substances as well as glyphosate.   Once a vessel has been admitted, to Rotterdam for example, its cargo of wheat can move freely throughout theEU, being transported by internal carriers as EU cargo into Italian territory, bypassing Italian controls.   The Italian customs authorities indicate that health and customs controls at their national border are more stringent than those carried out at European ports, which are called upon to deal with larger third-country wheat import volumes and are failing to carry out adequate sampling.   In Italy, all third-country wheat is subjected to sampling, while only sporadic checks are carried out on EU wheat.   In view of this:      1.  Can the Commission say what checks are carried out on wheat arriving in European ports?      2.  Are the ports of arrival properly equipped to detect glyphosate?       3.  Are port authorities required to carry out specified minimum checks in percentage terms or is this being left to their discretion and that of the Member States in question?