Input: Read this: The New Haven Division buses follow routes that had originally been covered by trolley service. Horse-drawn steetcars began operating in New Haven in the 1860s, and by the mid-1890s all the lines had become electric. In the 1920s and 1930s, some of the trolley lines began to be replaced by bus lines, with the last trolley route converted to bus in 1948. The City of New Haven is in the very early stages of considering the restoration of streetcar (light-rail) service, which has been absent since the postwar period.
Question: What decade ushered in the operation of horse-drawn carriages in New Haven? 

Output: the 1860s


QUES: White-box testing (also known as clear box testing, glass box testing, transparent box testing and structural testing, by seeing the source code) tests internal structures or workings of a program, as opposed to the functionality exposed to the end-user. In white-box testing an internal perspective of the system, as well as programming skills, are used to design test cases. The tester chooses inputs to exercise paths through the code and determine the appropriate outputs. This is analogous to testing nodes in a circuit, e.g. in-circuit testing (ICT).

An external perspective is used in white-box testing as well as what else is used to develop test cases?
What is the answer?
ANS: unanswerable


QUES: The universal emergence of atomic hydrogen first occurred during the recombination epoch. At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. Since hydrogen readily forms covalent compounds with most non-metallic elements, most of the hydrogen on Earth exists in molecular forms such as in the form of water or organic compounds. Hydrogen plays a particularly important role in acid–base reactions as many acid-base reactions involve the exchange of protons between soluble molecules. In ionic compounds, hydrogen can take the form of a negative charge (i.e., anion) when it is known as a hydride, or as a positively charged (i.e., cation) species denoted by the symbol H+. The hydrogen cation is written as though composed of a bare proton, but in reality, hydrogen cations in ionic compounds are always more complex species than that would suggest. As the only neutral atom for which the Schrödinger equation can be solved analytically, study of the energetics and bonding of the hydrogen atom has played a key role in the development of quantum mechanics.
What field of study has hydrogen and it's properties played a key role in development?

ANS: quantum mechanics


Mutualism or interspecies reciprocal altruism is a relationship between individuals of different species where both individuals benefit. In general, only lifelong interactions involving close physical and biochemical contact can properly be considered symbiotic. Mutualistic relationships may be either obligate for both species, obligate for one but facultative for the other, or facultative for both. Many biologists restrict the definition of symbiosis to close mutualist relationships.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What mutualistic relationships fit the the definition of symbiosis?
Ah, so.. unanswerable


Question: In its early years Universal released three brands of feature films — Red Feather, low-budget programmers; Bluebird, more ambitious productions; and Jewel, their prestige motion pictures. Directors included Jack Conway, John Ford, Rex Ingram, Robert Z. Leonard, George Marshall and Lois Weber, one of the few women directing films in Hollywood.:13
Try to answer this question if possible: Who was one of the few female Hollywood directors in this era?
Answer: Lois Weber


QUES: According to the scriptures, soon after the death of the Buddha, the first Buddhist council was held; a monk named Mahākāśyapa (Pāli: Mahākassapa) presided. The goal of the council was to record the Buddha's teachings. Upāli recited the vinaya. Ānanda, the Buddha's personal attendant, was called upon to recite the dhamma. These became the basis of the Tripitaka. However, this record was initially transmitted orally in form of chanting, and was committed to text in the last century BCE. Both the sūtras and the vinaya of every Buddhist school contain a wide variety of elements including discourses on the Dharma, commentaries on other teachings, cosmological and cosmogonical texts, stories of the Gautama Buddha's previous lives, and various other subjects.
the vinaya was recited by?

ANS:
Upāli