using System;
using System.Collections.Generic;
using System.Collections;
using System.Collections.Specialized;
using System.Linq;
using System.Text;
using System.IO;
using System.Reflection;
using static System.Math;
using System.Numerics;
static class Program{
	const int mod=(int)1e9+7;
	static List<Tuple<int,int>>[] li;
	static bool[] b;
	static void Main(){
		Sc sc=new Sc();
		var s=sc.Ia;
		int n=s[0],m=n-1;
		li=new List<Tuple<int,int>>[n+1];
		b=new bool[n+1];
		for(int i=1;i<=n;i++){
			li[i]=new List<Tuple<int,int>>();
		}
		for(int i=0;i<m;i++){
			var e=sc.Ia;
			e[0]++;e[1]++;
			li[e[0]].Add(Tuple.Create(e[1],e[2]));
			li[e[1]].Add(Tuple.Create(e[0],e[2]));
		}
		int q=sc.I;
		var da=new Dlca(li,true);
		StringBuilder sb=new StringBuilder();
		for(int i = 0;i<q;i++) {
			var e=sc.Ia;
			e[0]++;e[1]++;e[2]++;
			var c=da.Lca(da.Lca(e[0],e[1]),e[2]);
			long d=da.Di(c,e[0])+da.Di(c,e[1])+da.Di(c,e[2]);
			d-=da.Di(c,da.Lca(e[0],e[1]))+da.Di(c,da.Lca(e[0],e[2]))+da.Di(c,da.Lca(e[1],e[2]));
			sb.Append(d+"\n");
		}
		Console.Write(sb);
	}
}
public class Dlca{
	private bool[] b;
	private int[][] h;
	private int[] de;
	private long[] ca;
	private int o;
	private List<Tuple<int,int>>[] li;
	public Dlca(List<Tuple<int,int>>[] li,bool bo){
		this.li=li;
		int n=li.Length;
		o=(int)Log(n-1,2)+1;
		de=new int[n];
		de[0]=-1;
		h=new int[o][];
		b=new bool[n];
		h[0]=new int[n];
		ca=new long[n];
		if(bo){Fd2(1,0,0);}
		else{for(int i=1;i<n;i++){if(!b[i]){Fd2(i,0,0);}}}
		for(int i=1;i<o;i++){
			h[i]=new int[n];
			for(int j=1;j<n;j++){h[i][j]=h[i-1][h[i-1][j]];}
		}
	}
	private void Fd2(int a,int f,long g){
		b[a]=true;
		de[a]=f;
		ca[a]=g;
		for(int i=0;i<li[a].Count;i++){
			int j=li[a][i].Item1;
			if(!b[j]){h[0][j]=a;Fd2(j,f+1,g+li[a][i].Item2);}
		}
	}
	public int Lca(int a,int b){
		if(de[a]>de[b]){int c=a;a=b;b=c;}
		for(int i=o-1;de[a]!=de[b];i--){if(de[h[i][b]]>=de[a]){b=h[i][b];}}
		if(a==b){return a;}
		for(int i=o-1;i>=0;i--){if(h[i][a]!=h[i][b]){a=h[i][a];b=h[i][b];}}
		return h[0][a];
	}
	public long Di(int a,int b){
		int l=Lca(a,b);
		return l!=0?ca[a]+ca[b]-(ca[l]<<1):long.MinValue;
	}
}
public class Sc{
	public int I{get{return int.Parse(Console.ReadLine());}}
	public long L{get{return long.Parse(Console.ReadLine());}}
	public double D{get{return double.Parse(Console.ReadLine());}}
	public string S{get{return Console.ReadLine();}}
	public int[] Ia{get{return Array.ConvertAll(Console.ReadLine().Split(),int.Parse);}}
	public long[] La{get{return Array.ConvertAll(Console.ReadLine().Split(),long.Parse);}}
	public double[] Da{get{return Array.ConvertAll(Console.ReadLine().Split(),double.Parse);}}
	public string[] Sa{get{return Console.ReadLine().Split();}}
	public object[] Oa{get{return Console.ReadLine().Split();}}
	public int[] Ia2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),int.Parse);}}
	public int[] Ia3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),int.Parse);}
	public int[] Ia3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),int.Parse);}
	public long[] La2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),long.Parse);}}
	public long[] La3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),long.Parse);}
	public long[] La3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),long.Parse);}
	public T[] Arr<T>(int n,Func<T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f();}return a;}
	public T[] Arr<T>(int n,Func<int,T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(i);}return a;}
	public T[] Arr<T>(int n,Func<string[],T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(Console.ReadLine().Split());}return a;}
	public T[] Arr<T>(int n,Func<int,string[],T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(i,Console.ReadLine().Split());}return a;}
}