#include <bits/stdc++.h>
using namespace std;
const int MX = 1500005;
int n;
vector<int> adj[MX];
int dep[MX];
void dfs(int u, int p, int d) {
  dep[u] = d;
  for (auto v : adj[u]) {
    if (v != p) dfs(v, u, d + 1);
  }
}
signed main() {
  int t;
  cin >> t;
  for (int cs = 1; cs < t + 1; cs++) {
    cin >> n;
    int n0 = n;
    for (int i = 0; i < 3 * n + 1; i++) adj[i].clear();
    for (int i = 0; i < n - 1; i++) {
      int u, v;
      cin >> u >> v;
      adj[u].push_back(v);
      adj[v].push_back(u);
    }
    for (int i = 1; i < n0 + 1; i++) {
      char c;
      cin >> c;
      if (c == 'W') {
        n++;
        adj[i].push_back(n);
        adj[n].push_back(i);
        n++;
        adj[n].push_back(n - 1);
        adj[n - 1].push_back(n);
        n++;
        adj[n].push_back(n - 2);
        adj[n - 2].push_back(n);
      }
    }
    bool flag = 0;
    for (int i = 1; i < n + 1; i++) {
      if (adj[i].size() >= 4) {
        flag = 1;
      } else if (adj[i].size() == 3) {
        int cnt2 = 0;
        for (auto x : adj[i]) {
          if (adj[x].size() >= 2) cnt2++;
        }
        if (cnt2 >= 2) flag = 1;
      }
    }
    if (flag) {
      cout << "White\n";
      continue;
    }
    int u = -1, v = -1;
    for (int i = 1; i < n + 1; i++) {
      if (adj[i].size() == 3) {
        if (u == -1)
          u = i;
        else
          v = i;
      }
    }
    if (v == -1) {
      cout << "Draw\n";
      continue;
    }
    dfs(u, u, 0);
    if (dep[v] % 2)
      cout << "Draw\n";
    else
      cout << "White\n";
  }
}
