What Season Again?

Riddle: Oliver and Brittany are siblings. They were born in the winter and summer. If Brittany was not born in the winter, then who was born in the summer?

Answer: If Brittany was not born in the winter, then she was born in the summer. Therefore, it's Brittany. Source: https://riddles.com/index.php/11483

Oliver and Brittany are siblings. They were born in the winter and summer. If Brittany was not born in the winter, then who was born in the summer? — What Season Again? by Gabriella Simonetti Riddle