#instalment__episode  a part of a broadcast serial
  supertype:  programme__broadcast__program  a radio or television show; "did you see his program last night?"
  subtype:  cliffhanger  an episode that ends in suspense
  part of:  serial__series  a serialized set of programs; "a comedy series"; "the Masterworks concert series"

No statement uses or specializes instalment; click here to add one.