law: Railways Act, 1989
  123. Definitions.  
  In this Chapter, unless the context otherwise requires,- 
  (a) "accident" means, an accident of the nature
  
  described in section 124;
  (b) "dependant" means any of the following relatives
  
  of a deceased passenger, namely:- 
  (i) the wife, husband, son and daughter, and
  
  in case the deceased passenger is unmarried, or is a minor, his parent;
  (ii) the parent, minor brother or unmarried
  
  sister, widowed sister, widowed daughter-in-law and a minor child of a
  
  pre-deceased son, it dependant wholly or partly on the deceased passenger;
  (iii) a minor child of a predeceased daughter,
  
  if wholly dependant on the deceased passenger;
  (iv) the paternal grand parent wholly
  
  dependant on the deceased passenger.
  2[(c) "untoward incident" means- 
  (1)(i) the commission of a terrorist act
  
  within the meaning of sub-section (1) of section 3 of the Terrorist and
  
  Disruptive Activities (Prevention) Act, 1987 (28 of 1987); or
  (ii) the making of a violent attack or the
  
  commission of robbery or dacoity; or
  (iii) the indulging in rioting, shoot-out or
  
  arson, by any person in or on any train carrying passengers, or in a waiting
  
  hall, cloak room or reservation or booking office or on any platform or in any
  
  other place within the precincts of a railway station; or
  (2) the accidental falling of any passenger
  
  from a train carrying passengers.]