import java.util.*;

public class Tuple {

  private ArrayList<String> attributes;
  private ArrayList<String> domains;
  private ArrayList<Comparable> tuple;

  // METHODS
  
  // Constructor; set instance variables
  public Tuple (ArrayList<String> attr, ArrayList<String> dom) {

  }

  // Add String s at the end of the tuple
  public void addStringComponent(String s) {

  }

  // Add Double d at the end of the tuple
  public void addDoubleComponent(Double d) {

  }

  // Add Integer i at the end of the tuple
  public void addIntegerComponent(Integer i) {

  }

  // return String representation of tuple; See output of run for format.
  public String toString() {

  }

}