Gerald refers to the `` cythara `` and the `` tympanum `` , but their identification with the harp is uncertain , and it is not known that he ever visited Scotland .
PROPN VERB ADP DET `` NOUN `` CCONJ DET `` ADJ `` , CCONJ PRON NOUN ADP DET NOUN VERB ADJ , CCONJ PRON AUX PART VERB SCONJ PRON ADV VERB PROPN .