/span></span>, <span name="Y1">Y1<span class="tparams">[<span name="_">_</span>]</span></span>, <span name="X2">X2<span class="tparams">[<span name="_">_</span>]</span></span>, <span name="Y2">Y2<span class="tparams">[<span name="_">_</span>]</span></span>, <span name="G">G<span class="tparams">[<span name="_">_</span>]</span></span>]</span><span class="params">(<span class="implicit">implicit </span><span name="rest1">rest1: <a href="OptRestriction.html" name="provingground.translation.OptRestriction" id="