 
 <prompt> Which of the following no be type of mandolin: Lombardi, Adelstein or Neapolitan? Given the previous question, write a context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: Samuel Adelstein describe di Lombardi mandolin for 1893 as wider and shorter pass di Neapolitan mandolin, with a shallow back and a shorter and wider neck, with six single strings to di regular mandolin set of 4. Di Lombardi dey tuned C, D, A, E, B, G. Di strings dey fastened to di bridge like guitar own. Dem get 20 frets, wey cover three octaves, with additional 5 notes. Wen Adelstein write dis, no dey nylon strings, and di gut and single strings "no dey vibrate so clearly and sweetly like di double steel string of di Neapolitan." 