public NobelPrizesType(INobelRepository nobelRepository)
 {
     Field <IntGraphType>("Id", resolve: context => context.Source.Id);
     Field <FloatGraphType>("Year", resolve: context => context.Source.Year);
     Field(x => x.Category);
     Field(x => x.Motivation);
     Field(x => x.City);
     Field(x => x.Country);
     Field <ListGraphType <NobelWinnersType> >("NobelWinners",
                                               arguments: new QueryArguments(new QueryArgument <IntGraphType> {
         Name = "Id"
     }),
                                               resolve: context => nobelRepository.GetWinnersById(context.Source.Id));
 }