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:
Dialect

Context:
The German dialects show a wide spectrum of variation. Most of them are not mutually intelligible. German dialectology traditionally names the major dialect groups after Germanic tribes from which they were assumed to have descended.[citation needed]

Question:
After what entities are German dialects traditionally named?

Germanic tribes