But the merchants who sell the fruit know the country of origin.

The merchant knew well enough that he had received the kidnapped general within these portals.

"The merchant would know what is expected of him," he answered.

Note that the merchant doesn't know the client's payment details.

The merchant and the professor both know and love the story.

By this time the other merchants knew the secret, but there was enough and to spare for all.

The merchant knew these would be difficult to obtain, but within his means.

Not until the merchant knew he was dying had he given up the secret.

Neighbors seem to know one another, and merchants know customers by name.

The merchants knew perfectly in what manner it enriched themselves.