Invalid cities are rendered

[vishalnagda1]

I tried in my rails console CS.cities(:rj, :in) it renders me ["Ajmer", "Alwar", "Amer", "Amet", "Balana", "Bali", "Banswara", "Barmer", "Beawar", "Bharatpur", "Bhilwara", "Bikaner", "Binavas", "Bundi", "Charu", "Chetan", "Chhabra", "Dipas", "Ganganagar", "Gangapur", "Gangrar", "Jaipur", "Jaisalmer", "Jhalawar", "Jhunjhunun", "Jodhpur", "Kalan", "Kanakpura", "Khan", "Khinwara", "Kishangarh", "Kolayat", "Kota", "Lamba Harisingh", "Mahajan", "Mahatma", "Mandal", "Manna", "Mount Abu", "Nagar", "Nagaur", "Nanda", "Naraina", "Nathdwara", "Pali", "Pilani", "Pitampura", "Pushkar", "Rana", "Roshan", "Shiv", "Sikar", "Sirohi", "Sojat", "Sultan", "Surana", "Suratgarh", "Thali", "Tonk", "Udaipur"]
where as no such cities like chetan, Roshan, Mahatma, Khan etc. are not exist in rajasthan and some name like Shiv, Balana, Bali, Binavas, Dipas etc are small town/village in cities of rajasthan.