A data architect is configuring a new source for Adobe Experience Platform containing user profiles for an international travel agency. The profiles include distinct values for nationality and country of residence. The profile should ensure to capture all the current and past countries of residence.
The architect also receives a request to ensure that nationality and country of residence are accurately represented even if they are not the same. However, the architect is unsure how to model these multi-valued attributes in the Real-Time Customer Profile.
Which strategy should the data architect employ in creating the new schema for the user profiles?