 common name</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4       dairy cow         common name</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5 domestic cattle         common name</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6    domestic cow         common name</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 7              ox         common name</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 8            oxen         common name