In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[EX Q]: what name start with S?, Context: On 13 December 1904, Hungarian Sándor Just and Croatian Franjo Hanaman were granted a Hungarian patent (No. 34541) for a tungsten filament lamp that lasted longer and gave brighter light than the carbon filament. Tungsten filament lamps were first marketed by the Hungarian company Tungsram in 1904. This type is often called Tungsram-bulbs in many European countries. Filling a bulb with an inert gas such as argon or nitrogen retards the evaporation of the tungsten filament compared to operating it in a vacuum. This allows for greater temperatures and therefore greater efficacy with less reduction in filament life.
[EX A]: Sándor

[EX Q]: What is the numerical assignment of the third division of the Canadian Army?, Context: The Canadian Army is headed by the Commander of the Canadian Army and administered through four divisions—the 2nd Canadian Division, the 3rd Canadian Division, the 4th Canadian Division and the 5th Canadian Division—the Canadian Army Doctrine and Training System and the Canadian Army Headquarters.
[EX A]: 4th

[EX Q]: What connotates a two-celled membrane?, Context: Cyanobacteria are considered the ancestors of chloroplasts. They are sometimes called blue-green algae even though they are prokaryotes. They are a diverse phylum of bacteria capable of carrying out photosynthesis, and are gram-negative, meaning that they have two cell membranes. Cyanobacteria also contain a peptidoglycan cell wall, which is thicker than in other gram-negative bacteria, and which is located between their two cell membranes. Like chloroplasts, they have thylakoids within. On the thylakoid membranes are photosynthetic pigments, including chlorophyll a. Phycobilins are also common cyanobacterial pigments, usually organized into hemispherical phycobilisomes attached to the outside of the thylakoid membranes (phycobilins are not shared with all chloroplasts though).
[EX A]:
gram-negative