sentence: I 'm going to talk about Doctor Who , a British sci - fi TV show about an alien called the Doctor who travels through time and space in a police box called the TARDIS ( Time and Relative Dimension in Space ) .
modified: I 'm going to talk about doctor who , a British sci - fi TV show about an alien called the Doctor who travels through time and space in a police box called the TARDIS ( Time and Relative Dimension in Space ) .
transformation: ORTH