The waitress topped up my coffee every few minutes.

Efficacy refers to the beneficial effects of a program or policy under optimal conditions of delivery, whereas effectiveness refers to effects of a program or policy under more real-world conditions.

The three major languages (Hausa, Igbo and Yoruba) are called “Decamillionaires” and they serve as regional Lingua Franca.

Dortmund continued to control proceedings, however, and it looked only a matter of time before they would break through.