A spring gun, capable of inflicting death or serious injury:

Blew away much of Katko's right arm.

Is the best nay to defend unoccupied property.

Can only be used to protect an unoccupied boarded$-$up farmhouse.

Cannot be used to protect an unoccupied boarded$-$up farmhouse.

Cannot be used to protect a farmhouse unless it is unoccupied.