What are the register ids of electoral registries that have the cross reference source system code 'Electoral' or 'Tax'?
return electoral registries ;return #1 that  have  cross reference source system code 'Electoral ;return #1 that  have  cross reference source system code 'Tax ;return #2 ,  #3 ;return register ids of  #4
['select', 'filter', 'filter', 'union', 'project']