Do I have to make label=0 data when I make new datapack?

[saekomdalkom]

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• I walked through the tutorials
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You may also provide a Minimal, Complete, and Verifiable example you tried as a workaround, or StackOverflow solution that you have walked through. (e.g. cosmic radiation).

In addition, figure out your MatchZoo version by running import matchzoo; matchzoo.__version__. If this gives you an error, then you're probably using 1.0, and 1.0 is no longer supported. Then attach the corresponding label on the issue.

Now I'm trying to make my own datapack, and I want to ask if I need to make label=0 data explicitly.
Do I have to, or does matchzoo models execute label=0 automatically when there is no label=1 data between left and right?