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concerning

 

1. Customer: I have some questions concerning this guitar.

Salesperson: Okay, what are they?

Customer: How much is it, and where was it made?
guitar
 2. Airport security had some questions concerning the contents of this package.
a package
 3. She has a problem concerning some software on her computer.
woman with laptop

 4. This young patient has some problems concerning his heart.

 
doctor and patient
 5. I read an interesting article in the newspaper the other day concerning the health benefits of eating fresh vegetables.
veggies
 6. Several people in the neighborhood made phone calls to the police concerning this man.
man
 7. I received an email concerning a meeting that was scheduled for next week.
email

"concerning" is similar to "about" or "with reference to"