QUES: In the late 1980s, key breakthroughs in GaN epitaxial growth and p-type doping ushered in the modern era of GaN-based optoelectronic devices. Building upon this foundation, Dr. Moustakas at Boston University patented a method for producing high-brightness blue LEDs using a new two-step process. Two years later, in 1993, high-brightness blue LEDs were demonstrated again by Shuji Nakamura of Nichia Corporation using a gallium nitride growth process similar to Dr. Moustakas's. Both Dr. Moustakas and Mr. Nakamura were issued separate patents, which confused the issue of who was the original inventor (partly because although Dr. Moustakas invented his first, Dr. Nakamura filed first).[citation needed] This new development revolutionized LED lighting, making high-power blue light sources practical, leading to the development of technologies like BlueRay, as well as allowing the bright high resolution screens of modern tablets and phones.[citation needed]
In what decade were breakthroughs made that brought in the ancient era of GaN-based optoelectronic devices?

ANS: unanswerable

QUES: Previous post-Furman mass clemencies took place in 1986 in New Mexico, when Governor Toney Anaya commuted all death sentences because of his personal opposition to the death penalty. In 1991, outgoing Ohio Governor Dick Celeste commuted the sentences of eight prisoners, among them all four women on the state's death row. And during his two terms (1979–1987) as Florida's Governor, Bob Graham, although a strong death penalty supporter who had overseen the first post-Furman involuntary execution as well as 15 others, agreed to commute the sentences of six people on the grounds of "possible innocence" or "disproportionality."
 How many men were on Ohio's death row in 1991?

ANS: unanswerable

QUES: The ethnogenesis of the Greek nation is linked to the development of Pan-Hellenism in the 8th century BC. According to some scholars, the foundational event was the Olympic Games in 776 BC, when the idea of a common Hellenism among the Greek tribes was first translated into a shared cultural experience and Hellenism was primarily a matter of common culture. The works of Homer (i.e. Iliad and Odyssey) and Hesiod (i.e. Theogony) were written in the 8th century BC, becoming the basis of the national religion, ethos, history and mythology. The Oracle of Apollo at Delphi was established in this period.
In what year was Homer born?

ANS: unanswerable

QUES: Czech distinguishes three genders—masculine, feminine, and neuter—and the masculine gender is subdivided into animate and inanimate. With few exceptions, feminine nouns in the nominative case end in -a, -e, or -ost; neuter nouns in -o, -e, or -í, and masculine nouns in a consonant. Adjectives agree in gender and animacy (for masculine nouns in the accusative or genitive singular and the nominative plural) with the nouns they modify. The main effect of gender in Czech is the difference in noun and adjective declension, but other effects include past-tense verb endings: for example, dělal (he did, or made); dělala (she did, or made) and dělalo (it did, or made).
How is the feminine gender divided?

ANS:
unanswerable