input question: Extract the answer to the question from the following context. Question: Oxygen then moves to what? Context: Insect respiration is accomplished without lungs. Instead, the insect respiratory system uses a system of internal tubes and sacs through which gases either diffuse or are actively pumped, delivering oxygen directly to tissues that need it via their trachea (element 8 in numbered diagram). Since oxygen is delivered directly, the circulatory system is not used to carry oxygen, and is therefore greatly reduced. The insect circulatory system has no veins or arteries, and instead consists of little more than a single, perforated dorsal tube which pulses peristaltically. Toward the thorax, the dorsal tube (element 14) divides into chambers and acts like the insect's heart. The opposite end of the dorsal tube is like the aorta of the insect circulating the hemolymph, arthropods' fluid analog of blood, inside the body cavity.:6165 Air is taken in through openings on the sides of the abdomen called spiracles.???
output answer: directly to tissues that need it via their trachea

input question: Extract the answer to the question from the following context. Question: What theory is crucial for quantum dot display? Context: The structure of QD-LEDs used for the electrical-excitation scheme is similar to basic design of OLEDs. A layer of quantum dots is sandwiched between layers of electron-transporting and hole-transporting materials. An applied electric field causes electrons and holes to move into the quantum dot layer and recombine forming an exciton that excites a QD. This scheme is commonly studied for quantum dot display. The tunability of emission wavelengths and narrow bandwidth is also beneficial as excitation sources for fluorescence imaging. Fluorescence near-field scanning optical microscopy (NSOM) utilizing an integrated QD-LED has been demonstrated.???
output answer: electrical-excitation scheme

input question: Extract the answer to the question from the following context. Question: Who besides Hooker brought the Delta Blues to northern cities? Context: In the 1940s, Detroit blues artist John Lee Hooker became a long-term resident in the city's southwest Delray neighborhood. Hooker, among other important blues musicians migrated from his home in Mississippi bringing the Delta blues to northern cities like Detroit. Hooker recorded for Fortune Records, the biggest pre-Motown blues/soul label. During the 1950s, the city became a center for jazz, with stars performing in the Black Bottom neighborhood. Prominent emerging Jazz musicians of the 1960s included: trumpet player Donald Byrd who attended Cass Tech and performed with Art Blakey and the Jazz Messengers early in his career and Saxophonist Pepper Adams who enjoyed a solo career and accompanied Byrd on several albums. The Graystone International Jazz Museum documents jazz in Detroit.???
output answer: other important blues musicians

input question: Extract the answer to the question from the following context. Question: What was the usual consequence of Yonten Gyatso's predecessor? Context: Chen states that the fourth Dalai Lama Yonten Gyatso was granted the title "Master of Vajradhara" and an official seal by the Wanli Emperor in 1616. This was noted in the Biography of the Fourth Dalai Lama, which stated that one Soinam Lozui delivered the seal of the Emperor to the Dalai Lama. The Wanli Emperor had invited Yonten Gyatso to Beijing in 1616, but just like his predecessor he died before being able to make the journey.???
output answer:
died before being able to make the journey