</a></dt>
<dd><p>Checks whether a suitable NerDL graph is available for the given training dataset, before any
computations/training is done. This annotator is useful for custom training cases, where
specialized graphs are needed.</p>
<p>Important: This annotator should be used or positioned before any embedding or NerDLApproach
annotators in the pipeline and will process the whole dataset to extract the required graph parameters.</p>
<p>This annotator requires a dataset with at least two columns: one with 