<ul>
<li><strong>Atomic:</strong> a sentence describing one thought that cannot be further broken down in a practical way</li>
<li><strong>Independent:</strong> a sentence that can stand on its own, without external references like \"this effect\" or \"we\"</li>
<li><strong>Declarative:</strong> a complete sentence ending with a full stop that could in theory be either true or false</li>
<li><strong>Absolute:</strong> a sentence describing the core of a claim ignoring the (un)certainty about its truth and ignoring how it was discovered (no \"probably\" or \"evaluation showed that\"); typically in present tense</li>
</ul>