instruction: Is the next sentence syntactically and semantically acceptable?

That the cops spoke to the janitor about it yesterday, that robbery, is terrible.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John left his office at 11 and at 12, the library.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Herman mixed the eggs and the cream.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I explained that we should fix the sink.

response:
acceptable