Task: Question Answering
Input (English): Passage: The NSWCA were outraged by Lord Harris's letter and convened a special meeting to consider their response and subsequently had their honorary secretary, Mr J.M. Gibson, write to The Daily Telegraph in reply.  Gibson argued that "the misconduct of those who took possession of the wickets has been exaggerated" and that Lord Harris's account was "universally regarded here as both inaccurate and ungenerous." The letter said that "We cannot allow a libel upon the people of New South Wales so utterly unfounded as this to pass without challenge". It went on to accuse Harris of omitting certain facts in his account, which according to the NSWCA, depicted Australia and the cricket authorities in a poor light. These included an accusation that Harris had failed to note that the NSWCA and the media had immediately and strongly condemned the disturbance and treatment of the English visitors. Gibson also criticised Lord Harris for claiming that Coulthard was "competent", while "admitting 'he had made two mistakes in our innings'", especially as Coulthard's not out ruling against Lord Harris "was openly admitted by his lordship to be a mistake" that favoured the Englishmen. The letter further denied the claim that those who incited the riot were associated with the NSWCA and accused Harris of inflammatory conduct during the disorder.
Certainly the conduct of Lord Harris did not tend to calm the general excitement. His lordship elbowed his way out through the crowd in a manner so violent as to invite assault. He kept his men 'exposed to the fury of the mob' for about an hour and a half upon the absurd and insulting plea that if he did not 'the other side would claim the match!'. But not one of the team received a scratch, and Mr. Hornby dragged a supposed offender of very diminutive stature through the mass to the pavilion, a hundred yards away, in triumph, and amidst general applause, with only a torn shirt as the penalty of his heroism.
Spofforth, Australia's leading bowler, commented on the incident in an 1891 cricket magazine interview, but put a different slant on the cause. He thought that the English team were victims of intercolonial rivalry between New South Wales and Victoria:
Then the crowd could stand it no longer and rushed on to the field, refusing to budge until the umpire was removed. I have no wish to dwell on this painful occurrence, but I should like to point out that the feeling aroused was almost entirely due to the spirit of the rivalry between the Colonies ... The umpire was Victorian, and the party spirit in the crowd was too strong, 'Let an Englishman stand umpire,' they cried; 'we don't mind any of them. We won't have a Victorian.' There was not the slightest animosity against Lord Harris or any of his team; the whole disturbance was based on the fact that the offender was a Victorian. But Lord Harris stood by his umpire; and as a result, the match had to be abandoned till the following day. 
Question: What is the profession of Coulthard?
Output (English): umpire.