<human>:  Did Brazilian jiu-jitsu Gracie founders have at least a baker's dozen of kids between them?
<bot>: Yes, Brazilian jiu-jitsu Gracie founders had at least a baker's dozen of kids between them. A baker's dozen refers to 13 of anything. Brazilian jiu-jitsu was founded by Carlos and Helio Gracie. Helio Gracie had 9 children. Carlos Gracie had 11 children, so that's 13 altogether.