instruction: Is the next sentence syntactically and semantically acceptable?

After reading the pamphlet, Judy threw them into the garbage can.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

My uncle doesn't have a spouse but your aunt does and he is lying on the floor.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

If Ron knows whether to wear a tuxedo, and Caspar knows whether not to, do they know different things?

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

With this chainsaw we felled the murder.

response:
acceptable