This is kind of late but I couldn't find a way to do it easily either.
In case you are still interested in finding out, here is the CRA webpage about line 13000: https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-return/completing-a-tax-return/personal-income/line-13000-other-income/line-13000-other-kinds-income.html
That should give you some ideas for where to look.