"keep track (of...)"

[nschneid]

In non-UD terms I would say "keep track" licenses an of-complement that may be nominal or clausal. Does the complement attach to "keep" or "track"?

From a web search I see things like "Track was kept of the project's progress" (though this is marginal for me) but not things like "Track of the project's progress was kept". I suspect this reflects a shift in which the of-complement became associated with the verbal idiom as a whole, rather than the noun as you would expect of an of-phrase, and thus maybe should attach at the clause level.

[nschneid]

For now I'll treat the of-phrase as a non-core dependent of "keep" (so obl or advcl).