#include<algorithm>
#include<bitset>
#include<cmath>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<ctime>
#include<deque>
#include<fstream>
#include<iomanip>
#include<iostream>
#include<map>
#include<queue>
#include<set>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<utility>
#include<vector>

using namespace std;

#define dbg(x) (cout<<#x<<" = "<<(x)<<'\n')
#ifdef HOME
const string inputFile = "input.txt";
const string outputFile = "output.txt";
#else
const string problemName = "";
const string inputFile = problemName + ".in";
const string outputFile = problemName + ".out";
#endif

typedef long long int lld;
typedef pair<int, int> PII;
typedef pair<int, lld> PIL;
typedef pair<lld, int> PLI;
typedef pair<lld, lld> PLL;

const int INF = (1LL << 31) - 1;
const lld LINF = (1LL << 62) - 1;
const int dx[] = {1, 0, -1, 0, 1, -1, 1, -1};
const int dy[] = {0, 1, 0, -1, 1, -1, -1, 1};
const int MOD = (int)(1e9) + 7;

const int NMAX = 100000 + 5;
const int MMAX = 100000 + 5;
const int KMAX = 100000 + 5;
const int PMAX = 100000 + 5;
const int LMAX = 100000 + 5;
const int VMAX = 100000 + 5;

int N, M;
vector<int> V[NMAX];
int euler[2 * NMAX], cnt;
int first[NMAX];
int lvl[NMAX];
PII RMQ[18][2 * NMAX];
bitset<NMAX> viz;

void dfs(int x) {
    euler[++cnt] = x;
    first[x] = cnt;
    viz[x] = 1;

    for(auto y : V[x])
        if(!viz[y]) {
            lvl[y] = lvl[x] + 1;
            dfs(y);
            euler[++cnt] = x;
        }
}

void build() {
    int i, j, p;

    for(i = 1; i <= cnt; i++)
        RMQ[0][i] = make_pair(lvl[euler[i]], euler[i]);

    for(i = 1, p = 2; p <= cnt; i++, p <<= 1)
        for(j = 1; j + p / 2 <= cnt; j++)
            RMQ[i][j] = min(RMQ[i - 1][j], RMQ[i - 1][j + p / 2]);
}

int lca(int x, int y) {
    x = first[x];
    y = first[y];

    if(x > y)
        swap(x, y);

    int d = (y - x + 1);
    int i = log2(d + 0.5);
    int p = (1 << i);

    return min(RMQ[i][x], RMQ[i][y - p + 1]).second;
}

int main() {
    int i, j, x, y, z, type;

#ifndef ONLINE_JUDGE
    freopen(inputFile.c_str(), "r", stdin);
    freopen(outputFile.c_str(), "w", stdout);
#endif

    scanf("%d%d", &N, &M);

    for(i = 1; i <= N - 1; i++) {
        scanf("%d%d", &x, &y);
        V[x].push_back(y);
        V[y].push_back(x);
    }

    /* doar brut :( */

    dfs(1);
    build();

    while(M--) {
        scanf("%d", &type);

        if(type == 1) {
            scanf("%d", &x);
            viz = 0;
            dfs(x);
            build();
        } else {
            scanf("%d%d", &x, &y);
            z = lca(x, y);
            if(z == x || z == y)
                z = -1;
            printf("%d\n", z);
        }
    }

    return 0;
}