What do the abbreviations in POS tagging etc mean?

Question

Say I have the following Penn Tree:

(S (NP-SBJ the steel strike)
 (VP lasted
     (ADVP-TMP (ADVP much longer)
               (SBAR than
                             


        

Answer 1

The full list of Penn Treebank POS tags (so-called tagset) including examples can be found on https://www.sketchengine.eu/penn-treebank-tagset/

If you are interested in detail information on POS tag or POS tagging, see a brief manual for beginners on https://www.sketchengine.co.uk/pos-tags/