Question: What activity are both  Roman White and Kelsea Ballerini known for?
Sentence (from "Roman White"): He has also directed music videos for Kelly Clarkson, Florida Georgia Line, Kelsea Ballerini, Cassadee Pope, Josh Groban, Thomas Rhett, Danielle Bradbery, Kellie Pickler, Hunter Hayes, Maddie & Tae, Taylor Swift, Justin Bieber and more.
Relevant evidence: No