region: US
"fail": true, "attributes": {"region": "EU"}

not region: US
"fail": false, "attributes": {"region": "EU"}

region: US or region: EU or tier: 1 or tier: 2 or tier: 3 and owner: cloudflare
"fail": false, "attributes": {"region": "AZ", "tier": "2", "owner": "cloudflare"}

(region: US or region: EU) or (tier: 1 or tier: 2 or tier: 3) and (owner: cloudflare)
"fail": false, "attributes": {"region": "AZ", "tier": "1", "owner": "cloudflare"}

((region: US or region: EU) and (not (tier: 3)))
"fail": false, "attributes": {"region": "EU", "tier": "2", "owner": "cloudflare"}

not (region: US or region: EU)
"fail": true, "attributes": {"region": "EU"}

not not region: US
"fail": true, "attributes": {"region": "EU"}

region: US or region: US
"fail": true, "attributes": {"region": "AZ"}

region: US and region: EU or region: ASIA
"fail": true, "attributes": {"region": "US"}