Invers Attribute Query Not returning correct results

I am trying to create a definition query.

I am looking for the inverse of this query
RESTRICTIO = 'NOT AN OFFICIAL STREET'

I have tried
RESTRICTIO <> 'NOT AN OFFICIAL STREET'
RESTRICTIO != 'NOT AN OFFICIAL STREET'
NOT RESTRICTIO = 'NOT AN OFFICIAL STREET'
ALL yield a partial return.

Thank you and any suggestions would be greatly appreciated