class_docstr: In-memory store of translations for a given phrase, and the log
  probability of the those translations
class_docstr_tok: ["In-memory","store","of","translations","for","a","given","phrase",",","and","the","log","probability","of","the","those","translations"]
code: def __contains__(self, src_phrase):
      return src_phrase in self.src_phrases
  
imports: import subprocess
  from collections import namedtuple
label_desc: Use image node_id 4 for calling the PhraseTable obj's underlying member method code with example usage: obj.__contains__(src_phrase) and returns: unknown