text: """Module provides Constants to be used throughtout the project.
  
  Import:
  
  - PREPROCESSORS
  - POSTPROCESSORS
  - WORKFLOW_PUBLIC_PROPERTIES
  - BASE_ENTITY_PROPS
  - TIME_ENTITY_PROPS
  - PEOPLE_ENTITY_PROPS
  """
  PREPROCESSORS = "preprocessors"
  POSTPROCESSORS = "postprocessors"
  DEBUG = "debug"
  WORKFLOW_PUBLIC_PROPERTIES = [PREPROCESSORS, POSTPROCESSORS]
  S_INTENT_OOS = "_oos_"
  TRANSCRIPT = "transcript"
  VALUE = "value"
  TO = "to"
  FROM = "from"
  
  
  class EntityKeys:
      BODY = "body"
      DIM = "dim"
      END = "end"
      FROM = "from"
      GRAIN = "grain"
      INTERVAL = "interval"
      DURATION = "duration"
      LATENT = "latent"
      RANGE = "range"
      START = "start"
      TO = "to"
      TYPE = "type"
      UNIT = "unit"
      VALUE = "value"
      VALUES = "values"
      ORIGIN = "origin"
      NORMALIZED = "normalized"
      SLOT_NAMES = "slot_names"
  
  
  SKIP_ENTITY_ATTRS = [
      EntityKeys.DIM,
      EntityKeys.VALUES,
      EntityKeys.LATENT,
      EntityKeys.ORIGIN,
      EntityKeys.SLOT_NAMES,
  ]
  
  # This section is needed for dialogy.types.entities.*
  # Each entity type has a few properties which need to be
  # validated for their type.
  #
  # The actual use-case is, a `dict` is received by the factory
  # method of the Entity class, which provides all/enough values to
  # instantiate the Entity. We use this mapping to ensure that the
  # values belong to expected types.
  BASE_ENTITY_PROPS = [
      ([EntityKeys.RANGE], dict),
      ([EntityKeys.RANGE, EntityKeys.START], int),
      ([EntityKeys.RANGE, EntityKeys.END], int),
      ([EntityKeys.BODY], str),
      ([EntityKeys.VALUES], list),
      ([EntityKeys.DIM], str),
      ([EntityKeys.LATENT], bool),
  ]
  
  TIME_ENTITY_PROPS = BASE_ENTITY_PROPS + [([EntityKeys.GRAIN], str)]
  PEOPLE_ENTITY_PROPS = BASE_ENTITY_PROPS + [([EntityKeys.UNIT], str)]
  
  # Time related constants
  DATE_UNITS = ["day", "week", "month", "quarter", "year"]
  TIME_UNITS = ["hour", "minute", "second"]
  
  # Time Entity types
  DATE = "date"
  TIME = "time"
  DATETIME = "datetime"
  
  
  # This section covers signals tuple indices
  class SIGNAL:
      NAME = 0
      STRENGTH = 1
      REPRESENTATION = 2
  
  
  KEYWORD = "keyword"
  REGEX = "regex"
  SPACY = "spacy"
  