Read this and answer the question. If the question is unanswerable, say "unanswerable".

According to Ethnologue, the lexical similarity between Catalan and other Romance languages is: 87% with Italian; 85% with Portuguese; 80% with Spanish; 76% with Ladin; 75% with Sardinian; and 73% with Romanian.

What is the similarity between Catalan and Italian?
87%