There are no concrete answers as to the source or the name of the dish.
He'd asked the question earlier and received no concrete answer.
Your student ideas have some backing, but concrete answers are not available and may never be determined for certain.
You need to ask questions and get some concrete answers.
The court said it had found few concrete and productive answers to either question in academic research.
"What is the point of your experiments, if you cannot provide concrete answers?"
He hoped some concrete answer had been discovered, something that would dismiss the need to go back down, Robert stood outside.
We need to demonstrate that Europe can provide concrete answers.
However, I cannot give a concrete answer today on the issue of young people's participation.
He will respond to questions so long as there is a concrete answer.