code: public static String unifyTerminators(String text) {
          text = text.replaceAll("[\",:;()\\-]+", " "); // Replace commas, hyphens, quotes etc (count them as spaces)
          text = text.replaceAll("[\\.!?]", "."); // Unify terminators
          text = text.replaceAll("\\.[\\. ]+", "."); // Check for duplicated terminators
          text = text.replaceAll("\\s*\\.\\s*", ". "); // Pad sentence terminators
          return text.trim();
      }
docs: Replaces all terminators with space or dots. The final string will contain only
  alphanumerics and dots.
  
  @param text
  @return