public IEnumerable <NobelPrize> GetPrizesForCategory(NobelPrizeCategory category)
{
return(prizes.Where(p => p.Category == category));
}
public NobelPrize GetPrize(string year, NobelPrizeCategory category)
{
return(prizes.First(p => p.Year == year && p.Category == category));
}
public IEnumerable <NobelPrizeLaureate> GetLaureatesForPrize(string year, NobelPrizeCategory category)
{
var laureatesForPrize = GetPrize(year, category).Laureates;
return(laureates.Where(l => laureatesForPrize.Contains(l.Id)));
}