var kids, matrix, singers, song;
song = ["do", "re", "mi", "fa", "so"];
singers = {
  Jagger: "Rock",
  Elvis: "Roll"
};
matrix = [1, 0, 1, 0, 0, 1, 1, 1, 0];
kids = {
  brother: {
    name: "Max",
    age: 11
  },
  sister: {
    name: "Ida",
    age: 9
  }
};