[Tracker] SPARQL question

[Ken Schmedding <schmedk gmail com>]

I admit I have difficulty wrapping my head around these queries so here is my question.
The following query (Tracker 0.8.17) will find all files with the tag "here"

tracker-sparql -q "SELECT ?s nie:url(?s) nie:mimeType(?s)
WHERE { ?s a nfo:FileDataObject;nao:hasTag [nao:prefLabel'here'] }"

Now what if I want to search for the tags "here" or "there" or "now"?  Can I do this in a single query that will give all the files that contain one of these terms, and can I do it without repeating results?

Ken