/// <summary>
/// Create a new sentence where string in the given list is treated as a separate terminal
/// </summary>
/// <param name="tokens"></param>
/// <returns></returns>
public static Sentence FromTokens(IEnumerable <string> tokens)
{
var l = new List <Terminal>();
foreach (var token in tokens)
{
// l.Add(Terminal.Of(c.ToString()));
l.Add(Terminal.Of(token));
}
return(new Sentence(l));
}