on or
annotation set, i.e. both the given start and end offsets
are after the start of this span and before the end of this span.</p>
<p>If end is not given, then the method checks if start is an offset of the span.</p>
<p>Note: this can be called with an Annotation or AnnotationSet instead of <code>start</code> and <code>end</code>
(see gatenlp._utils.support_annotation_or_set)</p>
<h2 id="args">Args</h2>
<dl>
<dt><strong><code>start</code></strong></dt>
<dd>start offset of the span</dd>
<dt><strong><code>