Given this text, tell me the inventor of the Rueben sandwich and where it was invented.

There is no single agreed inventor of the Reuben sandwich. The text gives these possible answers:
*  Reuben Kulakofsky invented the sandwich in Omaha, Nebraska
* Arnold Reuben invented the sandwich at Reuben's Delicatessen in New York City
* Alfred Scheuing invented the sandwich at Reuben's Delicatessen in New York City