The reason for choosing the two groups ANEST and PENT as participants was motivated by that the characteristics of their working conditions, at the time of data sampling, implied a clear between-group exposure contrast in activity levels and mental demands.
These palaces of consumption -- and, by extension, the entire country -- are no more than a clearing between ocean and jungle.
History shows a clear link between inequality and instability.
The saga also spotlights a clear difference between Barack Obama and John McCain.
He makes a clear separation between army and pop life.
The figures show a clear distinction between races.
It's a clear choice between competence and chaos".
Mr Obama draws a clear distinction between Iraq and Syria.
There is a clear difference between these two coaches.
There is a "clear distinction between an exercise of discretion and an arbitrary decision," he said.
The use of language must be a clear thing between a government and the public.
