I : Ocean : : Stone : II I. [A] Glacier [B] Lake [C] Continent [D] River II. [P] Rock [Q] Pebble [R] Granite [S] Mountain
Statements:
All lakes are rivers.
All rivers are oceans.
Conclusions:
I. All lakes are oceans.
II. At least some oceans are rivers.
Statements: All pebbles are stones. No stone is a diamond. Some precious are diamonds. Conclusions: I. Some pebbles are diamonds. II. Some stones are precious.