(subclass PhoneOS OperatingSystem) | ComputingBrands.kif 90-90 | Phone OS is a subclass of operating system |
(subclass AndroidOS PhoneOS) | ComputingBrands.kif 28-28 | Android is a subclass of phone OS |
(subclass AppleIOS PhoneOS) | ComputingBrands.kif 84-84 | IOS is a subclass of phone OS |