Input: Article: Gain is a parameter which measures the degree of directivity of the antenna's radiation pattern. A high-gain antenna will radiate most of its power in a particular direction, while a low-gain antenna will radiate over a wider angle. The antenna gain, or power gain of an antenna is defined as the ratio of the intensity (power per unit surface area) radiated by the antenna in the direction of its maximum output, at an arbitrary distance, divided by the intensity radiated at the same distance by a hypothetical isotropic antenna which radiates equal power in all directions. This dimensionless ratio is usually expressed logarithmically in decibels, these units are called "decibels-isotropic" (dBi)

Now answer this question: What is the meaning of intensity?

Output: power per unit surface area

Input: Article: Both Roger Williams and John Clarke, his compatriot and coworker for religious freedom, are variously credited as founding the earliest Baptist church in North America. In 1639, Williams established a Baptist church in Providence, Rhode Island, and Clarke began a Baptist church in Newport, Rhode Island. According to a Baptist historian who has researched the matter extensively, "There is much debate over the centuries as to whether the Providence or Newport church deserved the place of 'first' Baptist congregation in America. Exact records for both congregations are lacking."

Now answer this question: Who founded the earliest Baptist church in North America?

Output: Roger Williams and John Clarke

Input: Article: According to the Oklahoma City Chamber of Commerce, the metropolitan area's economic output grew by 33 percent between 2001 and 2005 due chiefly to economic diversification. Its gross metropolitan product was $43.1 billion in 2005 and grew to $61.1 billion in 2009.

Now answer this question: What was Oklahoma cities gross metropolitan product in 2009?

Output:
$61.1 billion