Help the baffled lawyer read the eccentric billionaire's final will by choosing the correct preposition for each idiomatic expression.

"The entire estate shall be liquidated at the behest of my pet parrot, Captain Squawks. Furthermore, by dint of his exceptional loyalty, my butler will receive the mansion, much to the detriment of my ungrateful nephews."

"The entire estate shall be liquidated at the behest of my pet parrot..."

At the behest of is a formal idiom meaning "because someone has asked or ordered you to do something."

"...Furthermore, by dint of his exceptional loyalty..."

By dint of is an advanced expression meaning "as a result of" or "by means of."

"...much to the detriment of my ungrateful nephews."

To the detriment of means "in a way that is harmful or disadvantageous to" someone or something.