'Chicago P.D.' is a spin-off of which TV series?

'Torchwood' is a spin-off of which TV series? '1883' is a spin-off of which TV series? 'The Simpsons' is a spin-off of which TV series? 'The Originals' is a spin-off of which TV series? In which city is the sitcom 'Friends' set? What is the name of the coffee shop in 'Friends'? Which 'Friends' character is a paleontologist? Which 'Friends' character works as a chef?