Quote over multiple paragraphs

What is the preferred way of marking up quotations that run over several
paragraphs (but which are not blockquotes)? The quote tag is not allowed
outside of the para tag.

In English-language publications, when a quotation runs over several
paragraphs, the paragraphs are usually preceded by an opening
quotation mark, but they do not have a closing quotation mark unless
they are the last paragraph. I need to find out how to achieve this
effect with Docbook and the XSL stylesheets, or to at least represent
this semantically within Docbook so that I can write my own XSL.