Is the following sentence linguistically acceptable?
It was in 1997 when the IN introduced the alien registration receipt card.

acceptable

Is the following sentence linguistically acceptable?
John whined that he was hungry.

acceptable

Is the following sentence linguistically acceptable?
Bill seems to be obnoxious, but I don't think that Sam turns out.

unacceptable

Is the following sentence linguistically acceptable?
The senator should not have forgotten the concerns of her constituents.
acceptable