Article: The economy of Russia became heavily industrialized, accounting for about two-thirds of the electricity produced in the USSR. It was, by 1961, the third largest producer of petroleum due to new discoveries in the Volga-Urals region and Siberia, trailing only the United States and Saudi Arabia. In 1974, there were 475 institutes of higher education in the republic providing education in 47 languages to some 23,941,000 students. A network of territorially-organized public-health services provided health care. After 1985, the restructuring policies of the Gorbachev administration relatively liberalised the economy, which had become stagnant since the late 1970s, with the introduction of non-state owned enterprises such as cooperatives. The effects of market policies led to the failure of many enterprises and total instability by 1990.

Question: What two countries produced more petroleum than Russia in 1961?
Ans: the United States and Saudi Arabia


Article: The multitude of Middle Iranian languages and peoples indicate that great linguistic diversity must have existed among the ancient speakers of Iranian languages. Of that variety of languages/dialects, direct evidence of only two have survived. These are:

Question: How many of the Middlie Iranian tongues have remained in existence since ancient time?
Ans: two


Article: To define light source color properties, the lighting industry predominantly relies on two metrics, correlated color temperature (CCT), commonly used as an indication of the apparent "warmth" or "coolness" of the light emitted by a source, and color rendering index (CRI), an indication of the light source’s ability to make objects appear natural.

Question: What does CRI stand for?
Ans: color rendering index


Article: The Pāli Tipitaka is the only early Tipitaka (Sanskrit: Tripiṭaka) to survive intact in its original language, but a number of early schools had their own recensions of the Tipitaka featuring much of the same material. We have portions of the Tipitakas of the Sārvāstivāda, Dharmaguptaka, Sammitya, Mahāsaṅghika, Kāśyapīya, and Mahīśāsaka schools, most of which survive in Chinese translation only. According to some sources, some early schools of Buddhism had five or seven pitakas.

Question: Is is said that some early schools of buddhism had how many pitakas?
Ans:
five or seven