public ExampleSet copy()
	{
		ExampleSet copy = new SentenceSetCopy();
		for (int i=0;i<size();i++)
			copy.add(x(i), y(i), id(i));

		return copy;
	}
public ExampleSet copy ( ) { ExampleSet copy = new SentenceSetCopy ( ) ; for ( int i = 0 ; i < size ( ) ; i ++ ) copy . add ( x ( i ) , y ( i ) , id ( i ) ) ; return copy ; }
Returns a shallow copy of this ExampleSet instance:
the instances, ids and class labels themselves are
not cloned.

@return a shallow copy of this example set.