Bee -> sting once

Sting once

—————

Bee

A-> B

B

—————

A

A) Spring -> Sneeze nonstop

Sneeze

——————

Spring

C) Old + brittle -> move with care

/Move with care -> /Old + brittle

Negation: Old + brittle -> Move w care (still valid argument whereas the stimulus is invalid).

D) Only is G2

Ruin roof -> more thunderstorm

/Ruin roof -> /more thunderstorm