" class="external-link">source</a>
</li>
<li>
<code>fertility</code> – Which factors predict a fertile sperm
concentration? <a href="https://archive.ics.uci.edu/ml/datasets/Fertility" class="external-link">source</a>
</li>
<li>
<code>forestfires</code> – Which environmental conditions predict
forest fires? <a href="https://archive.ics.uci.edu/ml/datasets/Forest+Fires" class="external-link">source</a>
</li>
<li>
<code>heartdisease</code> – Which patients suffer from heart
disease? <a href="https://arch