This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Let me give you an example: Passage: The French and Indian War (1754–1763) was the North American theater of the worldwide Seven Years' War. The war was fought between the colonies of British America and New France, with both sides supported by military units from their parent countries of Great Britain and France, as well as Native American allies. At the start of the war, the French North American colonies had a population of roughly 60,000 European settlers, compared with 2 million in the British North American colonies. The outnumbered French particularly depended on the Indians. Long in conflict, the metropole nations declared war on each other in 1756, escalating the war from a regional affair into an intercontinental conflict.
The answer to this example can be: When was the French and Indian War?
Here is why: This question is based on the following sentence in the passage- The French and Indian War (1754–1763) was the North American theater of the worldwide Seven Years' War. It is a common convention to write (start year-end year) beside a historical event to understand when the event happened. You can ask questions like this one about dates, years, other numerals, persons, locations, noun phrases, verb phrases, adjectives, clauses etc. which exist in the paragraph.

OK. solve this:
The 1970s were highlighted by several successful comedy, fantasy, action and superhero-themed series for the network including Kung Fu, The Six Million Dollar Man, Wonder Woman, Starsky & Hutch, Charlie's Angels, The Bionic Woman, Fantasy Island and Battlestar Galactica. Many of these series were greenlit by Silverman, who left ABC in 1978 to become president of NBC's entertainment division. The rousing success of Happy Days also led to a successful spin-off series, Laverne & Shirley, which debuted in 1976. Charlie's Angels and Three's Company (which debuted in 1977) were two prime examples of a trend among the major networks during the 1970s known as "jiggle TV", featuring attractive, often buxom, women in main and guest roles.
Answer:
What position did Fred Silverman leave ABC to take in 1978?