instruction: Is the next sentence syntactically and semantically acceptable?

Gilgamesh missed Aphrodite

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

That Jason had arrived was obvious infuriated Medea.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Whom left Bill.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

This very heavy parcel was delivered yesterday.

response:
acceptable