import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        Map<Integer, Integer> langMap = new HashMap<>();

        // store in a hashMap, key is the language and 
        // value is the number of scientists who can understand this language
        int n = scanner.nextInt();
        for(int i = 0; i < n; i++) {
            int lang = scanner.nextInt();
            langMap.put(lang, langMap.getOrDefault(lang, 0) + 1);
        }

        int m = scanner.nextInt();
        int[] voiceLang = new int[m], subtitleLang = new int[m];
        for(int i = 0; i < m; i++) {
            soundLang[i] = scanner.nextInt();
        }
        for(int i = 0; i < m; i++) {
            subtitleLang[i] = scanner.nextInt();
        }

        int cinemaInd = -1, maxHappy = -1;
        for(int i = 0; i < m; i++) {
            // time 2 with the number of scientists who can understand the cinema sound
            // time 1 with the number of scientists who can understand the cinema sutitle
            int happy = 2 * langMap.getOrDefault(soundLang[i], 0) + langMap.getOrDefault(subtitleLang[i], 0);
            if(happy >  maxHappy) {
                cinemaInd = i;
                maxHappy = happy;
            }
        }

        System.out.println(cinemaInd + 1);
    }
}