I built and ran Syntaxnet successfully on a set of 1400 tweets. I have difficulty in understanding what each parameter in the parsed file means. For example, I have the sentence:
Shoutout @Aetna for covering my doctor visit. Love you!
for which the parsed file contents are:
1 Shoutout _ NOUN NNP _ 9 nsubj _ _
2 @ _ ADP IN _ 1 prep _ _
3 Aetna _ NOUN NNP _ 2 pobj _ _
4 for _ ADP IN _ 1 prep _ _
5 covering _ VERB VBG _ 4 pcomp _ _
6 my _ PRON PRP$ _ 8 poss _ _
7 doctor _ NOUN NN _ 8 nn _ _
8 visit. _ NOUN NN _ 5 dobj _ _
9 Love _ VERB VBP _ 0 ROOT _ _
10 you _ PRON PRP _ 9 dobj _ _
11 ! _ . . _ 9 punct _ _
What exactly do each of the columns mean? Why are there blanks and numbers other than the POS tags?