Regex entity extractor for lookup tables not extracting lookup values having a full stop character

I am using lookup table to extract entities with RegexEntity Extractor. While the usual values like

  • gopala
  • hawa
  • nikola-kovach
  • products, inc
    These are extracted.
    The values containing a full stop character are not extracted. like,
  • johny private ltd. (Notice the period after ltd)
  • products. inc
    Is there any solution for this?