It was highlighted that in the original article [1] the legend of Fig. 2 was erroneously swapped with an in-text sentence. This Correction article shows the correct Fig. 2. The original article has been updated.
Fig. 2
An anonymised sample tweet and the corresponding raw text after pre-processing. The blue text in the sample tweet is text that Twitter recognises as a handle or hashtag. In the processing steps, the red letters denote the part to be pre-processed while green is the filtered part
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