text: Title: Open IE separates auxiliary and participle into separate tuples
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  ## Description
  
  <!-- Please provide a clear and concise description of what the bug is here. -->
  
  <details>
  <summary><b>OpenIE separates auxiliary and participle into separate tuples. This affects the online demo and my local installation of AllenNLP.</b></summary>
  <p>
  In the sentence "He is running to the store", my understanding is that there is only one predicate and that the output of OpenIE should be a single tuple:
  [Arg0: He] [V: is running] [Arg1: to the store]
  
  Instead, I get two tuples where the first is simply the auxiliary:
  [V: is]
  [Arg0: He] [V: running] [Arg1: to the store]
  
  You can see the examples linked below from the online demo to see that it affects other sentences/auxiliaries too. I also noticed the SRL demo returns two predicates for the same sentence.
  
  </p>
  </details>
  
  
  ## Related issues or possible duplicates
  
  - None
  
  
  ## Environment
  Online demo, though I initially noticed this on my local installation of AllenNLP.
  
  
  
  ## Steps to reproduce
  
  
  https://demo.allennlp.org/open-information-extraction/s/he-has-moved-out-appartment/L1E3P1E9G4
  https://demo.allennlp.org/open-information-extraction/s/he-is-running-to-store/E5E4Z1H6D9
  