#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll mod = 1e9 + 7;
vector<ll> graph[200003];
ll fat[200003];
ll label_sum[200003];
bool has_label[200003];
ll siz[200003];
ll iter, seg_iter;
void prep(ll v, ll p)
{
fat[v] = p;
siz[v] = 1;
for (auto u : graph[v])
{
if (u == p)
continue;
prep(u, v);
siz[v] += siz[u];
}
}
ll fact[500003];
ll fact_inv[500003];
ll fast_pow(ll a, ll b)
{
if (b == 1)
return a;
ll cur = fast_pow(a, b / 2);
cur = (cur * cur) % mod;
if (b & 1)
cur = (cur * a) % mod;
return cur;
}
void init(ll &n, ll &r, ll &q)
{
cin >> n >> r;
for (ll i = 1, a, b; i < n; i++)
{
cin >> a >> b;
graph[a].push_back(b);
graph[b].push_back(a);
}
cin >> q;
fact[0] = 1;
for (ll i = 1; i <= 500002; i++)
fact[i] = (i * fact[i - 1]) % mod;
fact_inv[500002] = fast_pow(fact[500002], mod - 2);
for (ll i = 500001; i >= 0; i--)
fact_inv[i] = ((i + 1) * fact_inv[i + 1]) % mod;
}
ll res(ll siz, ll tag)
{
ll wyn = fact[siz + tag - 1];
wyn = (wyn * fact_inv[tag]) % mod;
wyn = (wyn * fact_inv[siz - 1]) % mod;
return wyn;
}
ll Find(ll v)
{
if (has_label[v])
return v;
return Find(fat[v]);
}
void add(ll v, ll x)
{
while (v)
{
siz[v] += x;
v = fat[v];
}
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
ll n, r, q;
init(n, r, q);
prep(1, 0);
label_sum[1] = r;
has_label[1] = true;
ll ans = res(n, label_sum[1]), neg_vert = 0;
cout << ans << '\n';
for (ll i = 1, t, v, tag; i <= q; i++)
{
cin >> t >> v;
if (t == 1)
cin >> tag;
ll up = Find(fat[v]);
if (label_sum[up] < 0)
neg_vert--;
else
ans = (ans * fast_pow(res(siz[up], label_sum[up]), mod - 2)) % mod;
if (t == 1)
{
has_label[v] = true;
label_sum[v] = tag;
add(fat[v], -siz[v]);
add(fat[up], siz[v]);
label_sum[up] -= label_sum[v];
ans = (ans * res(siz[v], label_sum[v])) % mod;
}
else
{
ans = (ans * fast_pow(res(siz[v], label_sum[v]), mod - 2)) % mod;
label_sum[up] += label_sum[v];
add(fat[up], -siz[v]);
add(fat[v], +siz[v]);
label_sum[v] = 0;
has_label[v] = false;
}
if (label_sum[up] < 0)
neg_vert++;
else
ans = (ans * res(siz[up], label_sum[up])) % mod;
if (neg_vert)
cout << "0\n";
else
cout << ans << '\n';
}
}
