This made the whole problem very simple to deal with.
It seems to me to be a simple problem of research.
It was a crisis based on a very simple problem.
This simple problem would take a modern computer almost no time to solve.
There is one simple problem: Democrats can't handle foreign policy.
There were many good solutions for so simple a problem.
A simple organic problem, most likely; no one will ever know.
Life is never a simple problem from question to answer.
Everybody has the same, very simple problem: the 1999 model was spend to grow.
The simple problem is that the figures don't add up.