public void solve() throws IOException {
    int n = nextInt();
    for (int i = 0; i < n; i++) {
      int max = 0;
      int total = 0;
      for (int j = 0; j < 4; j++) {
        int num = nextInt();
        max = Math.max(max, num);
        total += num;
      }
      if (max < total - max) {
        System.out.println("Possible");
      } else {
        System.out.println("Impossible");
      }
    }
  }