parentwork: Heuristic or manual selection when there are multiple parents

I have [this album](https://beta.musicbrainz.org/release/dd440e84-add3-4f5b-b762-602d8df1c643) in my collection. On CD 4 the tracks 4.3 to 4.8 get their parentwork as [Fantasia](https://beta.musicbrainz.org/work/74e65a9e-608d-4097-b238-c1bb6536ce7c), instead of the proper [ballet suite](https://beta.musicbrainz.org/work/fd337fdc-a511-4830-8ee7-09d4ada32a54). I'm not sure if there's a good way to fix this either in the code or in the data in musicbrainz. One thought I had was to choose the work with the earliest composition date, but that might not always work (especially if the dates are not specified), and might be difficult to implement, including needing to get more data than we already do.

If anyone has any other ideas about how to work around or solve this problem, that would be great.