Premise: Doctor Who . The programme depicts the adventures of a Time Lord called `` The Doctor '' , an extraterrestrial being from the planet Gallifrey . Its exterior appears as a blue British police box , which was a common sight in Britain in 1963 when the series first aired . The programme originally ran from 1963 to 1989 . The Doctor (Doctor Who) . Since the show 's inception in 1963 , the character has been portrayed by twelve lead actors .
Hypothesis: The first episode of Doctor Who came out in 1963.
Label: ENTAILMENT