#nullable enable

#region
var (_input, _iter) = (Array.Empty<string>(), 0);
T I<T>() where T : IParsable<T>
{
    while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Trim().Split(' '), 0);
    return T.Parse(_input[_iter++], null);
}
#endregion

static T[] Range<T>(int n, Func<T> F) => Enumerable.Range(0, n).Select(_ => F()).ToArray();

const int Max = int.MaxValue / 2;
var h = I<int>();
var w = I<int>();
var (sx, sy) = (I<int>(), I<int>());
var g = new bool[h + 2, w + 2];
for (var i = 0; i < h; i++)
{
    var row = I<string>();
    for (var j = 0; j < w; j++) g[i + 1, j + 1] = row[j] == '.';
}
var qz = Range(I<int>(), () => (I<int>(), I<int>(), I<int>()));

var dz = new int[h + 2, w + 2, 3, 3, 2];
for (var i = 1; i <= h; i++) for (var j = 1; j <= w; j++)
{
    for (var dx = 0; dx <= 2; dx++) for (var dy = 0; dy <= 2; dy++)
    {
        dz[i, j, dx, dy, 0] = dz[i, j, dx, dy, 1] = Max;
    }
}
dz[sx, sy, 1, 1, 0] = 0;
var q0 = new Queue<(int, int, int, int, int, int)>();
var q1 = new Queue<(int, int, int, int, int, int)>();
q0.Enqueue((sx, sy, 0, 0, 0, 0));
while (true)
{
    if (q0.Count == 0)
    {
        if (q1.Count == 0) break;
        q0 = q1;
        q1 = [];
        continue;
    }
    var (qx, qy, qdx, qdy, qf, qd) = q0.Dequeue();
    if (qd > dz[qx, qy, qdx + 1, qdy + 1, qf]) continue;
    for (var dx = -1; dx <= 1; dx++) for (var dy = -1; dy <= 1; dy++)
    {
        if ((dx, dy) == (0, 0)) continue;
        var (x, y) = (qx + dx, qy + dy);
        if (!g[x, y]) continue;
        if ((dx, dy) == (qdx, qdy) && dz[x, y, dx + 1, dy + 1, qf] > qd)
        {
            dz[x, y, dx + 1, dy + 1, qf] = qd;
            q0.Enqueue((x, y, dx, dy, qf, qd));
        }
        var nd = qd + 1;
        var nf = qf ^ 1;
        if (dz[x, y, dx + 1, dy + 1, nf] > nd)
        {
            dz[x, y, dx + 1, dy + 1, nf] = nd;
            q1.Enqueue((x, y, dx, dy, nf, nd));
        }
    }
}
dz[sx, sy, 1, 1, 0] = Max;

var ans = new List<string>();
foreach (var (x, y, t) in qz)
{
    var qns = false;
    for (var dx = 0; dx <= 2; dx++) for (var dy = 0; dy <= 2; dy++) for (var f = 0; f < 2; f++)
    {
        var d = dz[x, y, dx, dy, f];
        if (t >= d && t % 2 == f) qns = true;
    }
    ans.Add(qns ? "Yes" : "No");
}
Console.WriteLine(string.Join(Environment.NewLine, ans));