Parsing google JSON suggestions in C# .NET (suggestqueries.google.com)

        private static ArrayList GetSuggestions(string searchQuery)
        {
            string query = "http://suggestqueries.google.com/complete/search?output=firefox&hl=pl-PL&q=" + searchQuery.Replace(" ", "+");
            var client = new WebClient();
            var content = client.DownloadString(query);
            Console.WriteLine(content);
            MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(content));
            var serializer = new JavaScriptSerializer();
            ArrayList deserializedArrayList = serializer.Deserialize<ArrayList>(content);
            var suggestions = deserializedArrayList[1] as ArrayList;
            return suggestions;
        }