ERROR: Invalid ACE text: The word "worker" is unknown; did you mean "worked"? The word "worker" is unknown; did you mean "worked"? The word "worker" is unknown; did you mean "worked"? The word "healthy" is unknown. The word "healthy" is unknown. "everybody who is not provably a <> worker is a manager.": This is the first sentence that was not ACE. The sign <> indicates the position where parsing failed.