A. Atten 's 'Li leu d ' Doncô ' is considered the sole instance of a Walloon language text to have been written by a Grand Ducal national .
NOUN PROPN PART PROPN ADP NOUN ' PROPN ' AUX VERB DET ADJ NOUN ADP DET PROPN NOUN NOUN PART AUX AUX VERB ADP DET PROPN PROPN NOUN .