Do these two sentences from wikipedia have the same meaning?
The basic ISO contemporary Latin alphabet has 26 letters , which could be used , together with a further binary indicator , as keys for 52 weeks .
The basic ISO contemporary Latin alphabet has 26 letters , which , together with another binary indicator , could be used as a key for 52 weeks .

Options are: 1). no; 2). yes;
The answer is:
2).