text: import requests
  passage = "Aunt Jessie bought an ice cream"
  question = "what did Aunt Jessie buy?"
  data = {"model":"bidaf-elmo","passage": passage ,"question": question}
  r = requests.post('https://demo.allennlp.org/api/bidaf-elmo/predict', json=data).json()
  print(r["best_span_str"])