#include <bits/stdc++.h>

//    #include <boost/multiprecision/cpp_int.hpp>
 #define int long long
 #define inf  1000000007
 #define pa pair<int,int>
 #define ll long long
 #define pal pair<double,double>
 #define ppap pair<pa,int>
  #define PI 3.14159265358979323846
  #define paa pair<int,char>
  #define  mp make_pair
  #define  pb push_back
  #define EPS (1e-10)
                                          
    int dx[8]={0,1,0,-1,1,1,-1,-1};
    int dy[8]={1,0,-1,0,-1,1,1,-1};
                                            using namespace std;
                                   			class pa3{
                                            	public:
                                            	int x;
                                   				int y,z;
                                            	pa3(int x=0,int y=0,int z=0):x(x),y(y),z(z) {}
                                            	bool operator < (const pa3 &p) const{
                                            		if(x!=p.x) return x<p.x;
                                            		if(y!=p.y) return y<p.y;
                                            		 return z<p.z;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                   				bool operator > (const pa3 &p) const{
                                            		if(x!=p.x) return x>p.x;
                                            		if(y!=p.y) return y>p.y;
                                            		 return z>p.z;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa3 &p) const{
                                            		return x==p.x && y==p.y && z==p.z;
                                            	}
                                            		bool operator != (const pa3 &p) const{
                                            			return !( x==p.x && y==p.y && z==p.z);
                                            	}
                                            
                                            };
                                            
                                            class pa4{
                                            	public:
                                            	int x;
                                            	int y,z,w;
                                            	pa4(int x=0,int y=0,int z=0,int w=0):x(x),y(y),z(z),w(w) {}
                                            	bool operator < (const pa4 &p) const{
                                            		if(x!=p.x) return x<p.x;
                                            		if(y!=p.y) return y<p.y;
                                            		if(z!=p.z)return z<p.z;
                                            		return w<p.w;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator > (const pa4 &p) const{
                                            		if(x!=p.x) return x>p.x;
                                            		if(y!=p.y) return y>p.y;
                                            		if(z!=p.z)return z>p.z;
                                            		return w>p.w;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa4 &p) const{
                                            		return x==p.x && y==p.y && z==p.z &&w==p.w;
                                            	}
                                            		
                                            
                                            };
                                            class pa2{
                                            	public:
                                            	int x,y;
                                            	pa2(int x=0,int y=0):x(x),y(y) {}
                                            	pa2 operator + (pa2 p) {return pa2(x+p.x,y+p.y);}
                                            	pa2 operator - (pa2 p) {return pa2(x-p.x,y-p.y);}
                                            	bool operator < (const pa2 &p) const{
                                            		return y != p.y ? y<p.y: x<p.x;
                                            	}
                                            	bool operator > (const pa2 &p) const{
                                            		return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa2 &p) const{
                                            		return abs(x-p.x)==0 && abs(y-p.y)==0;
                                            	}
                                            	bool operator != (const pa2 &p) const{
                                            		return !(abs(x-p.x)==0 && abs(y-p.y)==0);
                                            	}
                                            		
                                            
                                            };
                                            

                      
                                string itos( int i ) {
                                ostringstream s ;
                                s << i ;
                                return s.str() ;
                                }
                                 
                                int gcd(int v,int b){
                                	if(v>b) return gcd(b,v);
                                	if(v==b) return b;
                                	if(b%v==0) return v;
                                	return gcd(v,b%v);
                                }
                 
                            
                                int mod;
int extgcd(int a, int b, int &x, int &y) {
    if (b == 0) {
        x = 1;
        y = 0;
        return a;
    }
    int d = extgcd(b, a%b, y, x);
    y -= a/b * x;
    return d;
}
pa operator+(const pa & l,const pa & r) {   
    return {l.first+r.first,l.second+r.second};                                    
}    
pa operator-(const pa & l,const pa & r) {   
    return {l.first-r.first,l.second-r.second};                                    
}  
                                
                int pr[200010];
                int inv[200010];
                
                int beki(int wa,int rr,int warukazu){
                	if(rr==0) return 1%warukazu;
                	if(rr==1) return wa%warukazu;
                	wa%=warukazu;
                	if(rr%2==1) return ((ll)beki(wa,rr-1,warukazu)*(ll)wa)%warukazu;
                	ll zx=beki(wa,rr/2,warukazu);
                	return (zx*zx)%warukazu;
                }

                
    			int comb(int nn,int rr){
    				if(rr<0 || rr>nn || nn<0) return 0;
    				int r=pr[nn]*inv[rr];
    				r%=mod;
    				r*=inv[nn-rr];
    				r%=mod;
    				return r;
    			}
                
                void gya(int ert){
                	pr[0]=1;
                	for(int i=1;i<=ert;i++){
                		pr[i]=(pr[i-1]*i)%mod;
                	}
                		inv[ert]=beki(pr[ert],mod-2,mod);
                	for(int i=ert-1;i>=0;i--){
                		inv[i]=inv[i+1]*(i+1)%mod;
                	}
                }
                
              //   cin.tie(0);
    		//	ios::sync_with_stdio(false);
    			//priority_queue<pa3,vector<pa3>,greater<pa3>> pq;            
                 //sort(ve.begin(),ve.end(),greater<int>());
//    mt19937(clock_per_sec);
  //  mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;
      
       
       
                               //----------------kokomade tenpure------------
vector<pa3> G[100020],G2[100020];

int s[100020],t[100020];

vector<int> oi;
vector<int> dis;
vector<int> col;
vector<int> zen;
int depth[100020];

int dp[22][100020];

void dfs(int r,int p,int len=0,int iro=0,int d=0){
	depth[r]=d;
	s[r]=oi.size();
	t[r]=oi.size();
	oi.pb(r);
	dis.pb(len);
	col.pb(iro);
	dp[0][r]=p;
	for(auto v:G[r])if(v.x!=p){
		dfs(v.x,r,v.z,v.y,d+1);
		G2[r].pb(v);
		t[r]=oi.size();
		oi.pb(r);
		dis.pb(-v.z);
		col.pb(v.y);
	}
}




int lca(int x,int y){
	if(depth[x]<depth[y])swap(x,y);
	int sa=depth[x]-depth[y];
	for(int i=0;i<=21;i++)if(sa&(1<<i))x=dp[i][x];
	if(x==y) return x;
	
	for(int i=21;i>=0;i--){
		if(dp[i][x]!=dp[i][y]){
			x=dp[i][x];
			y=dp[i][y];
		}
	}
	return dp[0][x];
}

vector<pa3> rui[100020];

void ch(){
	int e=oi.size();
	zen.pb(0);
	for(int i=1;i<e;i++){
		zen.pb(zen.back()+dis[i]);
	}
	
	for(int i=0;i<e;i++){
		if(rui[col[i]].size()==0){
				rui[col[i]].pb({i,dis[i],0});
			if(dis[i]>0)rui[col[i]].back().z=1;
			else rui[col[i]].back().z=-1;
		}
		else{
			int ima=rui[col[i]].back().z;
				rui[col[i]].pb({i,dis[i]+rui[col[i]].back().y,0});
			if(dis[i]>0)rui[col[i]].back().z=ima+1;
			else rui[col[i]].back().z=ima-1;
		}
	}
}

int solve(int x,int u,int v){
	
	int moto=zen[t[x]];
	pa3 p=(pa3){t[x]+1,-1,-1};
	int it=lower_bound(rui[u].begin(),rui[u].end(),p)-rui[u].begin();
	
	int kosu=it;
	int naga;
	if(kosu==0)naga=0;
	else naga=rui[u][it-1].y;
	
	if(kosu)kosu=rui[u][it-1].z;
	
	return moto-naga+kosu*v;
	
}

 signed main(){
 	
 
    //	       cin.tie(0);
   	//		ios::sync_with_stdio(false);
 //	dis.pb(0);
int n,Q;
 	cin>>n>>Q;

 	for(int i=0;i<n-1;i++){
 		int y,yy,x,xx;
 		cin>>y>>yy>>x>>xx;
 			G[y].pb({yy,x,xx});
 			G[yy].pb({y,x,xx});
 	}
 	dfs(1,1);
 	

 	//for(int i=1;i<=n;i++)cout<<i<<" "<<s[i]<<endl;
 	
 	for(int i=1;i<22;i++)for(int j=1;j<=n;j++){
 		dp[i][j]=dp[i-1][dp[i-1][j]];
 	}
 	
 	ch();
 	/*
 	for(auto v:oi)cout<<v<<" ";
 	cout<<endl;
 	for(auto v:dis)cout<<v<<" ";
 	cout<<endl;
 	for(auto v:col)cout<<v<<" ";
 	cout<<endl;
 	for(auto v:zen)cout<<v<<" ";
 	cout<<endl;
 	*/
 	for(int i=0;i<Q;i++){
 		
 		int x,y,u,v;
 		cin>>u>>v>>x>>y;
 		
 		int med=lca(x,y);
 	//	cout<<x<<" "<<y<<" "<<med<<endl;
 	//	cout<<solve(x,u,v)<<endl;
 	//	cout<<solve(y,u,v)<<endl;
 		int ans=solve(x,u,v)+solve(y,u,v)-2*solve(med,u,v);
 		cout<<ans<<endl;
 		
 	}
 	
 	
 	return 0;
 
  }
 

Measured memory_bytes: 58960