Input: Article: Another big impetus for the evolution of the AC radio format was the popularity of easy listening or "beautiful music" stations, stations with music specifically designed to be purely ambient. Whereas most easy listening music was instrumental, created by relatively unknown artists, and rarely purchased, AC was an attempt to create a similar "lite" format by choosing certain tracks (both hit singles and album cuts) of popular artists.

Now answer this question: What types of tracks from popular artists did adult contemporary radio play?

Output: hit singles and album cuts

Input: Article: Downstream operations, which now also includes the chemicals business, generates a third of Shell's profits worldwide and is known for its global network of more than 40,000 petrol stations and its 47 oil refineries. The downstream business, which in some countries also included oil refining, generally included a retail petrol station network, lubricants manufacture and marketing, industrial fuel and lubricants sales and a host of other product/market sectors such as LPG and bitumen. The practice in Shell was that these businesses were essentially local and that they were best managed by local "operating companies" often with middle and senior management reinforced by expatriates. In the 1990s, this paradigm began to change, and the independence of operating companies around the world was gradually reduced. Today, virtually all of Shell's operations in various businesses are much more directly managed from London and The Hague. The autonomy of "operating companies" has been largely removed, as more "global businesses" have been created.

Now answer this question: How many petrol stationsare included in Shell's downstream operations global network?

Output: more than 40,000

Input: Article: In 1965, Paul VI decided on the creation of a joint working group with the World Council of Churches to map all possible avenues of dialogue and cooperation. In the following three years, eight sessions were held which resulted in many joint proposals. It was proposed to work closely together in areas of social justice and development and Third World Issues such as hunger and poverty. On the religious side, it was agreed to share together in the Week of Prayer for Christian Unity, to be held every year. The joint working group was to prepare texts which were to be used by all Christians. On 19 July 1968, the meeting of the World Council of Churches took place in Uppsala, Sweden, which Pope Paul called a sign of the times. He sent his blessing in an ecumenical manner: "May the Lord bless everything you do for the case of Christian Unity." The World Council of Churches decided on including Catholic theologians in its committees, provided they have the backing of the Vatican.

Now answer this question: Whose backing did the World Council of Churches require Catholic theologians serving on joint committees to have?

Output:
Vatican