If set E = extinct, and W = has wings
Golden toads are not extinct and do have wings.
Golden toads are extinct and do not have wings.
Golden toads are not extinct and do not have wings.
In set notation,
Golden toads ∈ E ∩ W'
Golden toads ∈ E' ∩ W'
Golden toads ∈ E' ∩ W