Concepts: crowd, dip, herd, tick, waiting
A: a herd of many sheep crowded together in a stable waiting to be dipped for ticks and other pests
Concepts: district, guard, soldier, stand
A: soldiers stand guard at a checkpoint on the way to the district .
Concepts: currency, dollar, fall
A: foreign currencies hedge against a falling dollar .
Concepts: crop, farmer, tend
A:
a farmer tends to his crops .