How can I create a multi-type matrix?

Question

I have these data :

4  pippo pluto paperino
10 marco paolo roberto
2  hello cruel world

and I'd like to store these data into a multi-type matrix myMatrix. (First field is an integer, the rest are strings).

So, if I type myMatrix[1][2] I must get paolo. How can I do it on C#?

Answer 1

Tuple<int, string, string, string>[]
object[][]
Dictionary<int, string[]>