What is the fine-grained topic of the following text: During his time at WhatsOnStage, he was able to work on video content at events such as the Olivier Awards, as well as interviewing stage stars such as Sir Mark Rylance, Tim Minchin, Olivia Williams, John Tiffany and Sir Tim Rice. Only return the topic.
Working on video content and interviewing stage stars at WhatsOnStage.