Context: The BBC began its own regular television programming from the basement of Broadcasting House, London, on 22 August 1932. The studio moved to larger quarters in 16 Portland Place, London, in February 1934, and continued broadcasting the 30-line images, carried by telephone line to the medium wave transmitter at Brookmans Park, until 11 September 1935, by which time advances in all-electronic television systems made the electromechanical broadcasts obsolete.

Question: Where was the BBC's first studio located?
Answer: Broadcasting House, London

Question: What was the medium that brought the BBC's signal to the transmitter?
Answer: telephone line

Question: What term characterizes the type of broadcast made by the BBC prior to late 1935?
Answer: electromechanical

Question: Where was the BBC's second studio located?
Answer: 16 Portland Place, London

Question: When did the BBC first change studios?
Answer: February 1934

Question: What did the BBC begin on 30 August 1932?
Answer: Unanswerable

Question: Where did the studio move to in February 1935?
Answer: Unanswerable

Question: When were 35-line images broadcast until?
Answer: Unanswerable

Question: What was carried from medium wave transmitters to telephone lines?
Answer: Unanswerable

Question: What park were the telephone lines located in?
Answer: Unanswerable