CAS: NED missing

[sg-wbi]

From the paper

Concept Unique Identifiers (CUI) corre-
sponding to French terms from the UMLS
(Lindberg et al., 1993) for single or multi-
word terms. For multi-word terms, the an-
notations exploits the IOB (Inside-Outside-
Begin) format. For instance, the two-word
term vitamine B12 is encoded as follows:
- ... O
- vitamine B-C0042845
- B12 I-C0042845
- ... O

but _SUPPORTED_TASKS has only TEXT_CLASSIFICATION

[sg-wbi]

https://github.com/bigscience-workshop/biomedical/tree/master/bigbio/biodatasets/cas