* @return A new membership function
*/
private MembershipFunction fclTreeFuzzifyTermSingleton(Tree tree) {
if( debug ) Gpr.debug("Tree: " + tree.toStringTree());
Value singleTonValueX = new Value(tree, this);
MembershipFunction membershipFunction = new MembershipFunctionSingleton(singleTonValueX);
return membershipFunction;
}