public Dictionary<string, List<string>> CountDomains()
        {
            var items = this.people.SelectMany(x => x.Contributions.Select(y =>
            {
                var person = new People
                {
                    Name = x.Name,
                    URL = x.URL
                };
                var expert = this.specialists.FirstOrDefault(z => z.Name == x.Name && z.URL == x.URL);
                if (expert != null)
                {
                    var domains = expert.Skills.ToList();
                    domains.ForEach(z => person.AddSkill(z));
                }

                return new
                {
                    Person = person,
                    Project = y.Project
                };
            })).GroupBy(x => x.Project)
            .Select(x => new
            {
                Project = x.Key,
                Domains = x.SelectMany(y => y.Person.Skills).Distinct().ToList()    // All of each persons domain will be added
            })
            .ToDictionary(x => x.Project, x => x.Domains);

            return items;
        }