British Isles

Deductions

• landmass is for example British Isles ⇐ (British Isles is a landmass), (is a is inverse of is for example)
• British Isles is a landmass ⇐ (archipelago is subclass of landmass), (British Isles is a archipelago)
• archipelago is for example British Isles ⇐ (British Isles is a archipelago), (is a is inverse of is for example)