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:
BBC_Television

Context:
The BBC operates several television networks, television stations (although there is generally very little distinction between the two terms in the UK), and related programming services in the United Kingdom. As well as being a broadcaster, the corporation also produces a large number of its own programmes in-house, thereby ranking as one of the world's largest television production companies.

Question:
As a result of shows that the BBC itself creates, it is one of the biggest what?

television production companies