With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Extreme environments can be caused by Pressure.
text_B: A Ghost Story for Christmas is a strand of annual British short television films originally broadcast on BBC One between 1971 and 1978 , and revived in 2005 on BBC Four .. BBC. BBC. British. Television in the United Kingdom. BBC One. BBC One. BBC Four. BBC Four. With one exception , the original instalments were directed by Lawrence Gordon Clark and the films were all shot on 16 mm colour film .. Lawrence Gordon Clark. Lawrence Gordon Clark. The remit behind the series was to provide a television adaptation of a classic ghost story , in line with the oral tradition of telling supernatural tales at Christmas .. ghost story. ghost story. oral tradition. oral tradition. Each instalment is a separate adaptation of a short story , ranges between 30 and 50 minutes in duration , and features well-known British actors such as Clive Swift , Robert Hardy , Peter Vaughan , Edward Petherbridge and Denholm Elliott .. British. Television in the United Kingdom. Clive Swift. Clive Swift. Robert Hardy. Robert Hardy. Peter Vaughan. Peter Vaughan. Edward Petherbridge. Edward Petherbridge. Denholm Elliott. Denholm Elliott. The first five are adaptations of ghost stories by M. R. James , the sixth is based on a short story by Charles Dickens , and the two final instalments are original screenplays by Clive Exton and John Bowen respectively .. M. R. James. M. R. James. Charles Dickens. Charles Dickens. Clive Exton. Clive Exton. John Bowen. John Griffith Bowen. The stories were titled A Ghost Story for Christmas in listings such as the Radio Times , although this never appeared on screen , where they were regarded as individual films .. Radio Times. Radio Times. An earlier black-and-white adaptation of M. R. James 's Whistle and I 'll Come to You , directed by Jonathan Miller and shown as part of the series Omnibus in 1968 , is often cited as an influence upon the production of the films , and is sometimes included as part of the series .. M. R. James. M. R. James. Jonathan Miller. Jonathan Miller. Omnibus. Omnibus ( UK TV series ). The series was revived by the BBC in 2005 with a new set of adaptations that were produced intermittently over the next few years .. BBC. BBC
not_related.