<OMA>
	<OMS name="tuple" cd="test"></OMS>
	<OMA>
		<OMBIND id="lala">
			<OMS name="lambda" cd="fns1" cdbase="http://www.openmath.org/cd"></OMS>
			<OMA>
				<OMS name="plus" cdbase="http://www.openmath.org/cd" cd="arith1"></OMS>
				<OMV name="x"></OMV>
				<OMI>1</OMI>
			</OMA>
		</OMBIND>
	</OMA>
	<OMA>
		<OMBIND>
			<OMS name="lambda" cd="fns1" cdbase="http://www.openmath.org/cd"></OMS>
			<OMV name="x"/>
			<OMA>
				<OMR xref="lala"/>
			</OMA>
		</OMBIND>
		<OMI>1</OMI>
	</OMA>
	<OMI>3</OMI>
	<OMA>
		<OMR xref="lala"/>
	</OMA>
</OMA>