Select from options: How similar are the following two sentences?

A dog in the snow.
Two dogs in snow.

Give the answer on a scale from 0 - 5, where 0 is "not similar at all" and 5 is "means the same thing".

OPTIONS:
1). 0.
2). 1.
3). 2.
4). 3.
5). 4.
6). 5.
4).