There are many books on the shelf.

I saw a hawk flying in the sky.

The plantation covers a vast area and produces a variety of crops.

She complained of abdominal pain.

He made his intentions explicit.

Rationality is the key to making logical decisions.

Archaeology is the study of human history through the excavation and analysis of artifacts and other physical remains.

Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to control health problems.

The researcher used a rigorous methodology to conduct the experiment.

The doctor was able to diagnose the patient's illness.