def toversa(htmlsource, model, source_uri):
    '''
    >>> import urllib
    >>> from versa.reader import rdfalite
    >>> from versa.driver import memory
    >>> m = memory.connection()
    >>> burl = 'http://link.delawarelibrary.org/'
    >>> with urllib.request.urlopen(burl) as resourcefp: rdfalite.toversa(resourcefp.read(), m, burl)

    '''
    sink = versalinks(model)
    next(sink) #Prime the coroutine
    return parse(htmlsource, sink, source_uri)