Predict a video of any class or category

Effect

The mentalist asks a mobile phone to a spectator, announces that it is going to make a search on internet and once is done, leave the phone on the table
asks the spectator if he had to find something on internet, that would look for and where you do it? The spectator names such as youtube search engine and that would like to seek to Queen's Bohemian Rhapsody ...
.

Under these conditions, the mentalist ask the spectator to take his mobile phone and look which was the search done
Under such conditions, the spectator will find a search on youtube about Bohemian Rhapsody. The spectator could have named any video platform and any artist or video... but nevertheless, prediction will always be 100% correct.