With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael Douglas participated in a television crime drama from the 1970's.
text_B: The Streets of San Francisco is a 1970s television crime drama filmed on location in San Francisco , California , and produced by Quinn Martin Productions , with the first season produced in association with Warner Bros. .. television. television. crime drama. crime drama. San Francisco. San Francisco. California. California. Quinn Martin Productions. Quinn Martin. Television -LRB- QM produced the show on its own for the remainder of its run -RRB- .. It starred Karl Malden and Michael Douglas as two detectives in San Francisco .. Karl Malden. Karl Malden. Michael Douglas. Michael Douglas. San Francisco. San Francisco. The show ran for five seasons , between 1972 and 1977 on ABC , amassing a total of 119 60-minute episodes .. ABC. American Broadcasting Company. The series started with a pilot movie of the same title -LRB- based on the detective novel Poor , Poor Ophelia by Carolyn Weston -RRB- a week before the series debuted .. pilot movie. television movie. Carolyn Weston. :fr :Carolyn Weston. Edward Hume , who wrote the teleplay for the pilot , was credited as having developed the series based on characters in Weston 's novel .. Edward Hume. Edward Hume. teleplay. teleplay. The pilot featured guest stars Robert Wagner , Tom Bosley and Kim Darby .. Robert Wagner. Robert Wagner. Tom Bosley. Tom Bosley. Kim Darby. Kim Darby. Douglas left the series at the start of its final season and was replaced by Richard Hatch .. Richard Hatch. Richard Hatch ( actor )
related.