Issue with Manage Relationship

Hi, I am facing an issue in "Manage Relationship".

I have 3 dataset queries consider as fact data having date and city columns. Query1, Query2, Query3

I have two master dataset which is having date and city master data (unique data). 

Now I have to use Report Level Filter for using Date and City values as filter for all three fact queries. 

Now the problem is, I can make only single relationship between Date and City master with fact queries. Further relationship showing inactive due to ambiguity.

I have three visuals by three fact queries each which I cannot merge. Could you please help me out here how can I do this and provide report level filter to users so that they can select either Date or City values or both for filtering all 3 visuals simultaneously.