#thread__ribbon  any long object resembling a thin line; "a mere ribbon of land"; "the lighted ribbon of traffic"; "from the air the road was a gray thread"; "a thread of smoke climbed upward"
  supertype:  #physical_object__object  a tangible and visible entity; an entity that can cast a shadow; "it was full of rackets, balls and other objects"
  subtype:  #blade  something long and thin resembling a blade of grass; "a blade of lint on his suit"

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