RE: Grammar Question: "to be" (ëa vs. ná) on: January 11, 2005 01:57
The word sinomë is an adverb of place, and adverbs cannot get case-endings, so *sinomessë is certainly not allowed.
But the problem with your sentence is the verb 'to be'. Quenya has two verbs that mean 'to be': ná and ëa. When 'to be' is used to denote 'exist' or 'be somewhere' you have to use ëa.