#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)

#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()

const int MOD = 1000000007;
const ll INF = 1e18;
const int MX = 100001; //check the limits, dummy

vector<vpi> graph;
int level[MX];
int parent[MX];
bool special[MX];
bool checked[MX];
vpi edgeData;
vi parentEdge;
vector<map<int, pi> > colorData;
map<int, pi> curColors;
int lcaData[MX][18];
int dist[MX];

void dfs1(int v, int p) {
    F0R(i, sz(graph[v])) {
        int nxt = graph[v][i].f;
        if (nxt == p) continue;
        level[nxt] = level[v] + 1;
        parent[nxt] = v;
        parentEdge[nxt] = graph[v][i].s;
        dist[nxt] = dist[v] + edgeData[parentEdge[nxt]].s;
        dfs1(nxt, v);
    }
}

void dfs2(int v, int p) {
    if (special[v]) {
        colorData[v] = curColors;
    }

    F0R(i, sz(graph[v])) {
        int nxt = graph[v][i].f;
        if (nxt == p) continue;
        int ind = graph[v][i].s;
        int col = edgeData[ind].f;
        int dist = edgeData[ind].s;
        if (!curColors.count(col)) {
            curColors.insert(mp(col, mp(0, 0)));
        }
        curColors[col].f++;
        curColors[col].s += dist;
        dfs2(nxt, v);
        curColors[col].f--;
        curColors[col].s -= dist;
        if (curColors[col].f == 0) {
            curColors.erase(col);
        }
    }
}

void dfs3(int v, int p) {
    lcaData[v][0] = p;
    FOR(i, 1, 18) {
        if (lcaData[v][i-1] != -1) {
            lcaData[v][i] = lcaData[lcaData[v][i-1]][i-1];
        }
    }

    F0R(i, sz(graph[v])) {
        int nxt = graph[v][i].f;
        if (nxt == p) continue;
        dfs3(nxt, v);
    }
}

int lca(int u, int v) {
    if (level[u] < level[v]) {
        swap(u, v);
    }

    F0Rd(i, 18) {
        if (level[u] - (1 << i) >= level[v]) {
            u = lcaData[u][i];
        }
    }

    if (u == v) return u;

    F0Rd(i, 18) {
        if (lcaData[u][i] != -1 && lcaData[v][i] != -1 && lcaData[u][i] != lcaData[v][i]) {
            u = lcaData[u][i];
            v = lcaData[v][i];
        }
    }

    return lcaData[u][0];
}

pi getData(int v, int color) {
    if (special[v]) {
        if (!colorData[v].count(color)) {
            return mp(0, 0);
        } else {
            return colorData[v][color];
        }
    }

    pi prev = getData(parent[v], color);
    int ind = parentEdge[v];
    if (edgeData[ind].f == color) {
        prev.f++;
        prev.s += edgeData[ind].s;
    }
    return prev;
}

int rootDist(int v, pi data, int newLen) {
    return dist[v] - data.s + data.f * newLen;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);

    int N; cin >> N;
    int Q; cin >> Q;
    F0R(i, N) {
        vpi blank; graph.pb(blank);
        parentEdge.pb(0);
    }
    F0R(i, N-1) {
        int A, B, C, D; cin >> A >> B >> C >> D; A--; B--;
        edgeData.pb(mp(C, D));
        graph[A].pb(mp(B, i));
        graph[B].pb(mp(A, i));
    }

    parent[0] = -1; level[0] = 0; dist[0] = 0;
    dfs1(0, -1);

    priority_queue<pi> pq;
    F0R(i, N) {
        pq.push(mp(level[i], i));
    }
    F0R(i, N) {
        special[i] = false;
        checked[i] = false;
    }
    special[0] = true;
    checked[0] = true;

    while (!pq.empty()) {
        int cur = pq.top().s;
        pq.pop();
        if (checked[cur]) continue;
        F0R(i, 350) {
            cur = parent[cur];
            if (special[cur]) goto done;
            checked[cur] = true;
        }
        special[cur] = true;
        done:;
    }

    F0R(i, N) {
        map<int, pi> blank; colorData.pb(blank);
    }

    dfs2(0, -1);

    F0R(i, N) {
        F0R(j, 18) {
            lcaData[i][j] = -1;
        }
    }

    dfs3(0, -1);

    F0R(query, Q) {
        int A, B, C, D; cin >> A >> B >> C >> D;
        C--; D--; int E = lca(C, D);
        cout << rootDist(C, getData(C, A), B) + rootDist(D, getData(D, A), B) - 2*rootDist(E, getData(E, A), B) << endl;

    }

    return 0;
}

// read the question correctly (ll vs int)
// template by bqi343

Measured memory_bytes: 258700