* Noun: "I found a good parking spot near the restaurant." Here, "parking" refers to the act of parking or the space where you park.
* Verb: "They are parking the car in the garage." Here, "parking" is the action of placing the car in a specific location.
* Adjective: "There was a parking lot across the street." Here, "parking" modifies the noun "lot" to describe the type of lot.
So, to determine the part of speech of "parking" in a sentence, you need to consider its function within the sentence.