What does the humble groom mean?

Organize sentences:

1.20 years ago, the groom of the local army in Lizhou cut off a soldier's head with a kitchen knife. Twenty years later, we will disturb the three provinces to concentrate 100 thousand troops to solve this groom. Who will personally pay attention to this small program, who can personally imagine what human history is written in!

2, you always call me doctor, doctor, if I am in charge of horses, you call me groom; If I am in charge of the car, you call me a coachman; If I am in charge of accounting, what should you call me?

3, cooking, call the cook; A person who keeps horses is called a groom; Those who cultivate the land are called farmers; Butchers sell meat; Martial arts, called Beowulf; If you drive, call the driver; I am in charge of the accounts. I'll do anything you want!

The Obamas have repeatedly said that they want an abandoned dog, such as adopting one from an animal shelter.

Dove married Elis's daughter Alice, who is Mrs Obama's great-grandparents.