Unambiguous means there is no danger of being misunderstood. Here are some sentences.
He went along with their plan.
The roof is above the ceiling
Simple predicate
Absolute Zero is the temperature at which everything freezes.
"I stopped trying to start the lawn mower out of frustration."Or"I am frustrated with trying to write a sentence about frustration."
It is always best to be honest.
She handed me the book.
I have plants.
She was sincere and honest.
Accrue holiday
The rules are beautifully simple
Assume the position!
You are an accessory to murder...
We are studying acidity.
He went along with their plan.
The roof is above the ceiling
I am trying to construct a simple model.