Original sentence: The Maria Hertogh riots or Nadrah riots, which started on 11 December, 1950 in Singapore, consisted of outraged Muslims who resented the court decision to give the custody of Maria Hertogh (or Bertha Hertogh), then 13, to her biological Dutch Catholic parents after she had been raised as a Muslim under the care of Aminah binte Mohamed, whom she regarded as her mother.The riots lasted till noon on 13 December, with 18 killed, 173 injured and many properties damaged – the worst incident of its kind ever witnessed in Singapore
Edited sentence: The Maria Hertogh riots or Nadrah riots, which started on 11 December, 1950 in Singapore, consisted of outraged Muslims who resented the court decision to give custody of Maria Hertogh (or Bertha Hertogh), then 13, to her biological Dutch Catholic parents after she had been raised as a Muslim under the care of Aminah binte Mohamed, whom she regarded as her mother.The riots lasted till noon on 13 December, with 18 killed, 173 injured and many properties damaged—the worst incident of its kind ever witnessed in Singapore