#include<bits/stdc++.h>

 #define N 500005

 #define M 10000005

 #define LL long long

 #define inf 0x3f3f3f3f

 using namespace std;

 inline int ra()

 {

     int x=,f=; char ch=getchar();

     while (ch<'' || ch>'') {if (ch=='-') f=-; ch=getchar();}

     while (ch>='' && ch<='') {x=x*+ch-''; ch=getchar();}

     return x*f;

 }

 struct node{

     int to,next;

 }e[N<<];

 int head[N],cnt;

 int fa[N][],deep[N],n,m;

 void insert(int x, int y){e[++cnt].to=y; e[cnt].next=head[x]; head[x]=cnt;}

 void dfs(int x)

 {

     for (int i=; i<=; i++)

         if (deep[x]>=(<<i))

             fa[x][i]=fa[fa[x][i-]][i-];

         else break;

     for (int i=head[x];i;i=e[i].next)

     {

         if (e[i].to==fa[x][]) continue;

         fa[e[i].to][]=x;

         deep[e[i].to]=deep[x]+;

         dfs(e[i].to);

     }

 }

 int lca(int x, int y)

 {

     if (deep[x]<deep[y]) swap(x,y);

     int t=deep[x]-deep[y];

     for (int i=; (<<i)<=t ; i++)

         if (t&(<<i)) x=fa[x][i];

     for (int i=; i>=; i--)

         if (fa[x][i]!=fa[y][i])

             x=fa[x][i],y=fa[y][i];

     if (x==y) return x;

     return fa[x][];

 }

 int lca_cost(int x, int y)

 {

     int sum=;

     if (deep[x]<deep[y]) swap(x,y);

     int t=deep[x]-deep[y];

     for (int i=; (<<i)<=t ; i++)

         if (t&(<<i)) x=fa[x][i],sum+=(<<i);

     for (int i=; i>=; i--)

         if (fa[x][i]!=fa[y][i])

             x=fa[x][i],y=fa[y][i],sum+=(<<i)*;

     if (x==y) return sum;

     return sum+;

 }

 int main()

 {

     n=ra(); m=ra();

     for (int i=; i<n; i++)

     {

         int x=ra(),y=ra();

         insert(x,y); insert(y,x);

     }

     dfs();

     for (int i=; i<=m; i++)

     {

         int x=ra(),y=ra(),z=ra();

         int ans1=lca_cost(x,y)+lca_cost(lca(x,y),z);

         int ans2=lca_cost(x,z)+lca_cost(lca(x,z),y);

         int ans3=lca_cost(y,z)+lca_cost(lca(y,z),x);

         int ans=min(min(ans1,ans2),ans3);

         if (ans==ans1) printf("%d ",lca(x,y));

         else if (ans==ans2) printf("%d ",lca(x,z));

         else if (ans==ans3) printf("%d ",lca(y,z));

         printf("%d\n",ans);

     }

 }