text: Title: Difference between ELMo embedding for sentence/separate tokens
  Body: Hello,
  
  I am trying to use ELMo embedder for further text classification task. I cannot find information on that, so forced to ask a question here.
  
  What is the conceptual difference between this 
  `elmo([['вопрос', 'жизни', 'и' ,'смерти']])`
  and this
  `elmo([['вопрос жизни и смерти']])`
  The embedding size is the same, but the values are different. 
  
  Thanks in advance.