#include <iostream>
#include <vector>
using namespace std;

int main() {
#ifdef DEBUG
    freopen("26D4_in_2.txt","r",stdin);
    freopen("26D4_out_2.txt","w",stdout);
#endif
    int M;
    cin >> M;
    for (int t = 0; t < M; t++) {
        int N, K;
        cin >> N >> K;
        vector<vector<int>> left(K), right(K);
        vector<char> res(K);
        for (int i = 0; i < K; i++) {
            int P;
            cin >> P;
            left[i].resize(P);
            right[i].resize(P);
            for (int j = 0; j < P; j++) cin >> left[i][j];
            for (int j = 0; j < P; j++) cin >> right[i][j];
            cin >> res[i];
        }

        int answer = 0;
        int candidates = 0;
        for (int c = 1; c <= N; c++) {
            for (int dir = 0; dir < 2; dir++) {
                bool lighter = (dir == 0);
                bool ok = true;
                for (int i = 0; i < K && ok; i++) {
                    int side = 0;
                    for (int x : left[i]) if (x == c) { side = -1; break; }
                    if (side == 0) {
                        for (int x : right[i]) if (x == c) { side = 1; break; }
                    }
                    char expect;
                    if (side == 0) {
                        expect = '=';
                    } else if (side == -1) {
                        expect = lighter ? '<' : '>';
                    } else {
                        expect = lighter ? '>' : '<';
                    }
                    if (expect != res[i]) ok = false;
                }
                if (ok) {
                    if (answer != c) {
                        candidates++;
                        answer = c;
                    }
                    break;
                }
            }
            if (candidates > 1) break;
        }

        if (t > 0) cout << "\n";
        if (candidates == 1) cout << answer << "\n";
        else cout << 0 << "\n";
    }
    return 0;
}