What is the fine-grained topic of the following text: On behalf of the Cuero High School Class of 2018 and Parent Committee for Prom 2017, I would like to extend a most sincere thanks to everyone who participated in fundraisers, made purchases, donations and all who lent a hand in decorating and post-prom clean up. Only return the topic.
Prom 2017 gratitude from Cuero High School Class of 2018 and Parent Committee