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

Ukraine leader pledges crisis talks
Ukraine Leader Pledges Crisis Talks

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


1). 0;
2). 1;
3). 2;
4). 3;
5). 4;
6). 5;
6).