Yurii Lomonosov
... that Yurii Lomonosov constructed the first operationally successful mainline diesel locomotive?
... that <b id="mwAVA"><a class="mw-redirect" href="./Yurii_Lomonosov" id="mwAVE" rel="mw:WikiLink" title="Yurii Lomonosov">Yurii Lomonosov</a></b> constructed the first operationally successful mainline <a href="./Diesel_locomotive" id="mwAVI" rel="mw:WikiLink" title="Diesel locomotive">diesel locomotive</a>?