<a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwAYQ" rel="mw:WikiLink" title="Soviet Union">Soviet</a> <i id="mwAYU"><a href="https://en.wikipedia.org/wiki/Mars_program" id="mwAYY" rel="mw:WikiLink" title="Mars program">Mars 5</a></i> space probe is launched.