This is the 7461st most frequent German word.
giancarlo
"Giancarlo" is not a German word; it is an Italian male given name.
Giancarlo serves as a proper noun here to identify a specific person involved in the activity.
Gestern traf ich Giancarlo im Park, wo er ein Buch las.
Yesterday I met Giancarlo in the park where he was reading a book.
Giancarlo is used possessively to indicate ownership of the dog in this sentence.
Der Hund von Giancarlo ist sehr verspielt und freundlich.
Giancarlo's dog is very playful and friendly.
Giancarlo is used as a proper noun, referring to a person's name.