TextField and Indexer for nested label

[rollben]

Hi I want to use allennlp's TextField or SequenceLabelField to realize a list of nest labels, e.g. [[apple notebook], [pear], ...[people square], [ great wall], [movie]] , I want to the label to indexed as a whole meanwhile keep its meaningful , for instance , apple notebook, I hope it can be have a individual number index to represent "apple notebook" instead of "apple_notebook" or "B-apple_notebook" or something else, and also let the token id of "apple notebook" could be input the encoder and obtained contextual meaning embedding vector. So how could I realize it through allennlp's Field, thanks!

[github-actions[bot]]

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