Question: In which American animated educational interactive children's television program,  created and executive produced by Chris Gifford and Valerie Walsh, did Harrison Chad have a role?
Sentence (from "Go, Diego, Go!"): Created and executive produced by Chris Gifford and Valerie Walsh, the series is a spin-off of "Dora the Explorer" and follows Dora's cousin Diego, an 8-year-old boy whose adventures frequently involve rescuing animals and protecting their environment.
Relevant evidence: Yes