sentence: A black screen appears with pink letters explaining what the video is about and who is in it. sentence:   Gymnasts are at a gym showing how to tumble and flip. sentence:   A black screen appears with pink letters. sentence:   The screen has a shaded lower area with pink letters. sentence:   A black screen with pink letters comes on. sentence:   A graphic screen comes up that transforms into a video of a flower with blue letters and numbers in a shaded box at the bottom of the screen.