This is the place to post questions and discussions on usage and style. The members of the Wordwizard Clubhouse will also often be able to help you to formulate that difficult letter.
1) I recalled an incident in 1997.
Can we tell if the incident took place in 1997 or if it was 1997 when I recalled that incident?
I'm puzzled therefore I think.
But if you said. "It was in 1997 that I recalled an incident". Or "I recalled an incident that happened in 1997", we would know what you were on about.
Signature: All those years gone to waist!
Bob in Wales