#include <iostream>
#include <vector>
#include <cstring>
#include <queue>
#include <cstdio>

using namespace std;

typedef long long ll;

vector<ll> g[1000005];
ll dis[1000005];
ll disMe[1000005];
ll route[1000005];

int main()
{
    ios_base::sync_with_stdio(0);
    freopen("escape.in","r",stdin);
    freopen("escape.out","w",stdout);
    int t;
    cin>>t;
    while(t--)
    {
        ll n,m,a,b,georgiStart;
        cin>>n>>m>>a>>b>>georgiStart;
        for(int i=0;i<=n;i++)
        {
            g[i].clear();
            dis[i]=-1;
            disMe[i]=-1;
            route[i]=-1;
        }
        while(m--)
        {
            ll u,v;
            cin>>u>>v;
            g[u].push_back(v);
            g[v].push_back(u);
        }
        ll k;
        cin>>k;
        vector<ll> exits;
        while(k--)
        {
            ll in;
            cin>>in;
            exits.push_back(in);
        }
        if(exits.empty())
        {
            cout<<"-1\n";
            continue;
        }
        dis[exits[0]]=0;
        queue<ll> q;
        q.push(exits[0]);
        while(!q.empty())
        {
            ll u=q.front();
            q.pop();
            for(int i=0;i<g[u].size();i++)
            {
                ll v=g[u][i];
                if(dis[v]==-1)
                {
                    dis[v]=dis[u]+a;
                    q.push(v);
                }
            }
        }
        if(dis[georgiStart]==0)
        {
            cout<<"-1\n";
            continue;
        }
        disMe[georgiStart]=0;
        q.push(georgiStart);
        while(!q.empty())
        {
            ll u=q.front();
            q.pop();
            for(int i=0;i<g[u].size();i++)
            {
                ll v=g[u][i];
                if(disMe[v]==-1 && disMe[u]+b<dis[v])
                {
                    route[v]=u;
                    disMe[v]=disMe[u]+b;
                    q.push(v);
                }
            }
        }
        ll ans=0;
      /*  cout<<"dis\n";
        for(int i=1;i<=n;i++)
            cout<<dis[i]<<" ";
        cout<<"\ndisMe\n";
        for(int i=1;i<=n;i++)
            cout<<disMe[i]<<" ";
        cout<<"\n";*/
        for(int i=0;i<exits.size();i++)
        {
            if(disMe[exits[i]]!=-1)
            {
                ans=exits[i];
                //cout<<"ans"<<ans<<"\n";
                break;
            }
        }
        if(ans==0)
        {
            cout<<"-1\n";
            continue;
        }
        vector<ll> vec;
        vec.push_back(ans);
        ll curr=route[ans];
        while(curr!=-1)
        {
            vec.push_back(curr);
            curr=route[curr];
        }
        cout<<vec.size()<<"\n";
        for(int i=vec.size()-1;i>=0;i--)
            cout<<vec[i]<<" ";
        cout<<"\n";
    }

    return 0;
}