Yakov Polonsky
...that the librettoes for Tchaikovsky's operas Vakula the Smith and Cherevichki were adapted from Gogol's stories by the poet Yakov Polonsky?
...that the <a href="./Libretto" id="mwBko" rel="mw:WikiLink" title="Libretto">librettoes</a> for <a class="mw-redirect" href="./Tchaikovsky" id="mwBks" rel="mw:WikiLink" title="Tchaikovsky">Tchaikovsky</a>'s <a href="./Opera" id="mwBkw" rel="mw:WikiLink" title="Opera">operas</a> <i id="mwBk0"><a href="./Vakula_the_Smith" id="mwBk4" rel="mw:WikiLink" title="Vakula the Smith">Vakula the Smith</a></i> and <i id="mwBk8"><a href="./Cherevichki" id="mwBlA" rel="mw:WikiLink" title="Cherevichki">Cherevichki</a></i> were adapted from <a class="mw-redirect" href="./Gogol" id="mwBlE" rel="mw:WikiLink" title="Gogol">Gogol</a>'s stories by the poet <b id="mwBlI"><a href="./Yakov_Polonsky" id="mwBlM" rel="mw:WikiLink" title="Yakov Polonsky">Yakov Polonsky</a></b>?