Identify whether a content of the text is object-oriented programming or not.
Classes and objects are the cornerstone of object-oriented programming.
Yes, the text refers to Object-Oriented Programming.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify whether a content of the text is object-oriented programming or not.

### Input:
Classes and objects are the cornerstone of object-oriented programming.

### Output:
Yes, the text refers to Object-Oriented Programming.