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Stanford Parser processes raw text in English, Chinese, German, Arabic, and French, and extracts constituency parse trees.
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package edu.stanford.nlp.trees;

import edu.stanford.nlp.util.StringUtils;

import java.util.regex.Pattern;

/** This class contains some English String or Tregex regular expression
 *  patterns. They originated in other classes like
 *  EnglishGrammaticalRelations, but were collected here so that they
 *  could be used without having to load large classes (which we might want
 *  to have parallel versions of.
 *  Some are just stored here as String objects, since they are often used as
 *  sub-patterns inside larger patterns.
 *
 *  @author Christopher Manning
 */
public class EnglishPatterns {

  public static final String timeWordRegex =
    "/^(?i:Mondays?|Tuesdays?|Wednesdays?|Thursdays?|Fridays?|Saturdays?|Sundays?|years?|months?|weeks?|days?|mornings?|evenings?|nights?|January|Jan\\.|February|Feb\\.|March|Mar\\.|April|Apr\\.|May|June|July|August|Aug\\.|September|Sept\\.|October|Oct\\.|November|Nov\\.|December|Dec\\.|today|yesterday|tomorrow|spring|summer|fall|autumn|winter)$/";

  public static final String timeWordLotRegex =
      "/^(?i:Mondays?|Tuesdays?|Wednesdays?|Thursdays?|Fridays?|Saturdays?|Sundays?|years?|months?|weeks?|days?|mornings?|evenings?|nights?|January|Jan\\.|February|Feb\\.|March|Mar\\.|April|Apr\\.|May|June|July|August|Aug\\.|September|Sept\\.|October|Oct\\.|November|Nov\\.|December|Dec\\.|today|yesterday|tomorrow|spring|summer|fall|autumn|winter|lot)$/";

  // TODO: remove everything but "to be".  Must do this carefully to
  // make sure we like all the dependency changes that happen
  public static final String copularWordRegex =
    "/^(?i:" + StringUtils.join(SemanticHeadFinder.copulaVerbs, "|") + ")$/";

  public static final String clausalComplementRegex =
    "/^(?i:seem|seems|seemed|seeming|resemble|resembles|resembled|resembling|become|becomes|became|becoming|remain|remains|remained|remaining)$/";

  // r is for texting r = are
  public static final String passiveAuxWordRegex =
      "/^(?i:am|is|are|r|be|being|'s|'re|'m|was|were|been|s|ai|m|art|ar|wase|seem|seems|seemed|seeming|appear|appears|appeared|become|becomes|became|becoming|get|got|getting|gets|gotten|remains|remained|remain)$/";

  public static final String beAuxiliaryRegex =
        "/^(?i:am|is|are|r|be|being|'s|'re|'m|was|were|been|s|ai|m|art|ar|wase)$/";

  public static final String haveRegex =
          "/^(?i:have|had|has|having|'ve|ve|v|'d|d|hvae|hav|as)$/";

  // private static final String stopKeepRegex = "/^(?i:stop|stops|stopped|stopping|keep|keeps|kept|keeping)$/";

  public static final String selfRegex =
    "/^(?i:myself|yourself|himself|herself|itself|ourselves|yourselves|themselves)$/";

  public static final String xcompVerbRegex =
      "/^(?i:advise|advises|advised|advising|allow|allows|allowed|allowing|ask|asks|asked|asking|beg|begs|begged|begging|demand|demands|demanded|demanding|desire|desires|desired|desiring|expect|expects|expected|expecting|encourage|encourages|encouraged|encouraging|force|forces|forced|forcing|implore|implores|implored|imploring|lobby|lobbies|lobbied|lobbying|order|orders|ordered|ordering|persuade|persuades|persuaded|persuading|pressure|pressures|pressured|pressuring|prompt|prompts|prompted|prompting|require|requires|required|requiring|tell|tells|told|telling|urge|urges|urged|urging)$/";

  // A list of verbs where the answer to a question involving that
  // verb would be a ccomp.  For example, "I know when the train is
  // arriving."  What does the person know?
  public static final String ccompVerbRegex =
    "/^(?i:ask|asks|asked|asking|know|knows|knew|knowing|specify|specifies|specified|specifying|tell|tells|told|telling|understand|understands|understood|understanding|wonder|wonders|wondered|wondering)$/";

  // A subset of ccompVerbRegex where you could expect an object and
  // still have a ccomp.  For example, "They told me when ..." can
  // still have a ccomp.  "They know my order when ..." would not
  // expect a ccomp between "know" and the head of "when ..."
  public static final String ccompObjVerbRegex =
    "/^(?i:tell|tells|told|telling)$/";

  // TODO: is there some better pattern to look for? We do not have tag information at this point
  public static final String RELATIVIZING_WORD_REGEX = "(?i:that|what|which|who|whom|whose)";

  public static final Pattern RELATIVIZING_WORD_PATTERN = Pattern.compile(RELATIVIZING_WORD_REGEX);

  private EnglishPatterns() {} // static constants

}