p, role_top, domainx, data_top, read
p, role_solo, domainx, data_solo, read
g, alice, role_mid, domainx, _, _
g, role_mid, role_top, domainx, 0000-01-01 00:00:00, 0000-01-02 00:00:00
g, alice, role_solo, domainx, 0000-01-01 00:00:00, 0000-01-02 00:00:00