an animated circus animal
... that the nickname of a Russian submarine constructed from interconnected spheres comes from an animated circus animal made out of juggling balls?
... that the nickname of <a href="./Russian_submarine_Losharik" id="mwBf8" rel="mw:WikiLink" title="Russian submarine Losharik">a Russian submarine</a> constructed from interconnected spheres comes from <b id="mwBgA"><a href="./Losharik" id="mwBgE" rel="mw:WikiLink" title="Losharik">an animated circus animal</a></b> made out of juggling balls?