1. "The dog wagged its tail."

* Antecedent: "The dog"

* Pronoun: "its"

* The pronoun "its" refers back to the noun "dog".

2. "The children played in the park all afternoon. It was full of laughter."

* Antecedent: "the park"

* Pronoun: "It"

* The pronoun "It" refers back to the noun phrase "the park".

Let me know if you'd like more examples!