We extracting the word list, we didn’t convert words into lower case. therefore the word ‘The’ is different from ‘the’. But shouldn’t they be treated as the same as "The“ and ‘the’ should probably have same POS tag?
I think this is right, from what I remember, there is a preprocessing step to convert them to lower, or maybe the tokenizer does that! Unless they leave this intentionally because of some meaning of the word.