You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Dutch_language

Context:
Many native speakers of Dutch, both in Belgium and the Netherlands, assume that Afrikaans and West Frisian are dialects of Dutch but are considered separate and distinct from Dutch: a daughter language and a sister language, respectively. Afrikaans evolved mainly from 17th century Dutch dialects, but had influences from various other languages in South Africa. However, it is still largely mutually intelligible with Dutch. (West) Frisian evolved from the same West Germanic branch as Old English and is less akin to Dutch.

Question:
What dialect is considered a sister language to Dutch?

West Frisian