Currently there are many tools for RDF file type conversion. RDF2RDF, EasyRDF, and rrdf in R has some conversion functionalities. However, NONE of these conversion tools include converting .nq files to the other file types (.nt, .ttl, .rdf, .xml, etc).
I know N-QUAD is an N-TRIPLE file with just a 4th column, being the graph's IRI; however, there are many other considerations that need to be changed when converting from .nq to .nt.
I want to, ultimately, convert my .nq file to a .ttl file, including PREFIXs being declared at the beginning of the file. RDF2RDF doesn't seem to accommodate for prefix declarations. Is there a tool out there I don't know about that can help me do this?
you can use rdf2rdf to convert .nq to .ttl