In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Example Input: Passage: After the Southwest became part of the U.S., explorers continued to look for good east–west routes along the 35th parallel. In 1853, a crew led by U.S. Army Lieutenant Amiel Whipple surveyed along a sandy wash in the northern part of the Petrified Forest. So impressed was Whipple by the petrified wood along the banks of the arroyo that he named it Lithodendron Creek (Stone Tree Creek). Geologist Jules Marcou, a member of the Whipple expedition, observed that the petrified trees were from the Triassic.A slightly later route along the parallel was a wagon road, built between 1857 and 1860, that involved experimental use of camels as transport. In the late 19th century, settlers and private stagecoach companies followed similar east–west routes. Homesteaders who stayed in the area developed cattle ranches on the grasslands, and cattle grazed in the Petrified Forest until the mid-20th century.Also close to the 35th parallel was the Atlantic and Pacific Railroad. Its opening in the early 1880s led to the founding of towns like Holbrook and Adamana. Visitors could stop at the Adamana train station, book a hotel room, and take a tour of what was then called the Chalcedony Forest. Over the years, the line changed hands, becoming the Atchison, Topeka and Santa Fe Railway, and then the BNSF. More than 60 BNSF trains, mostly carrying freight, pass through the park every day. U.S. Route 66, a former transcontinental auto highway developed in 1926 from part of the National Old Trails Road, ran parallel to the railroad tracks until it was decommissioned in 1985. The park has preserved within its boundaries a small grassy section of the road. Interstate 40, which crosses the park, replaced the older highway. 
Question: What town could you take a tour of the Chalcedony Forest from?
Example Output: Adamana.

Example Input: Passage: The largest amount of activity recorded for the Lōihi seamount was a swarm of 4,070 earthquakes between July 16 and August 9, 1996. This series of earthquakes was the largest recorded for any Hawaiian volcano to date in both amount and intensity. Most of the earthquakes had moment magnitudes of less than 3.0. "Several hundred" had a magnitude greater than 3.0, including more than 40 greater than 4.0 and a 5.0 tremor.The final two weeks of the earthquake swarm were observed by a rapid response cruise launched in August 1996. The National Science Foundation funded an expedition by University of Hawaii scientists, led by Frederick Duennebier, that began investigating the swarm and its origin in August 1996. The scientists' assessment laid the groundwork for many of the expeditions that followed. Follow-up expeditions to Lōʻihi took place, including a series of manned-submersible dives in August and September.
These were supplemented by a great deal of shore-based research. Fresh rock collected during the expedition revealed that an eruption occurred before the earthquake swarm.Submersible dives in August were followed by NOAA-funded research in September and October 1996. These more detailed studies showed the southern portion of Lōʻihi's summit had collapsed, a result of a swarm of earthquakes and the rapid withdrawal of magma from the volcano. A crater 1 km (0.6 mi) across and 300 m (1,000 ft) deep formed out of the rubble. The event involved the movement of 100 million cubic meters of volcanic material. A region of 10 to 13 km2 (4 to 5 sq mi) of the summit was altered and populated by bus-sized pillow lava blocks, precariously perched along the outer rim of the newly formed crater. "Pele's Vents," an area on the southern side, previously considered stable, collapsed completely into a giant pit, renamed "Pele's Pit". Strong currents make submersible diving hazardous in the region.The researchers were continually met by clouds of sulfide and sulfate. The sudden collapse of Pele's Vents caused a large discharge of hydrothermal material. The presence of certain indicator minerals in the mixture suggested temperatures exceeded 250 °C, a record for an underwater volcano. The composition of the materials was similar to that of black smokers, the hydrothermal vent plumes located along mid-ocean ridges. Samples from mounds built by discharges from the hydrothermal plumes resembled white smokers.The studies demonstrated that the most volcanically and hydrothermally active area was along the southern rift. Dives on the less active northern rim indicated that the terrain was more stable there, and high lava columns were still standing upright. A new hydrothermal vent field (Naha Vents) was located in the upper-south rift zone, at a depth of 1,325 m (4,350 ft). 
Question: What was the name of the new hydrothermal vent field located in the upper-south rift zone?
Example Output: Naha Vents.

Example Input: Passage: Alkan's large scale Duo (in effect a sonata) Op. 21 for violin and piano (dedicated to Chrétien Urhan) and his Piano Trio Op. 30 appeared in 1841. Apart from these, Alkan published only a few minor works between 1840 and 1844, after which a series of virtuoso works was issued, many of which he had played at his successful recitals at Érard and elsewhere; these included the Marche funèbre (Op. 26), the Marche triomphale  (Op. 27) and Le chemin de fer (also published, separately, as Op. 27). In 1847 appeared the Op. 31 Préludes and his first large-scale unified piano work, the Grande sonate Les quatre âges (Op. 33). The sonata is structurally innovative in two ways; each movement is slower than its predecessor, and the work anticipates the practice of progressive tonality, beginning in D major and ending in G♯ minor. Dedicated to Alkan Morhange, the sonata depicts in its successive movements its 'hero' at the ages of 20 (optimistic), 30 ("Quasi-Faust", impassioned and fatalistic), 40 (domesticated) and 50 (suffering: the movement is prefaced by a quotation from Aeschylus's Prometheus Unbound). In 1848 followed Alkan's set of 12 études dans tous les tons majeurs Op. 35, whose substantial pieces range in mood from the hectic Allegro barbaro (no. 5) and the intense Chant d'amour-Chant de mort (Song of Love – Song of Death) (no. 10) to the descriptive and picturesque L'incendie au village voisin (The Fire in the Next Village) (no. 7).A number of Alkan's compositions from this period were never performed and have been lost. Among the missing works are some string sextets and a full-scale orchestral symphony in B minor, which was described in an article in 1846 by the critic Léon Kreutzer, to whom Alkan had shown the score. Kreutzer noted that the introductory adagio of the symphony was headed "by Hebrew characters in red ink ... This is no less than the verse from Genesis: And God said, Let there be light: and there was light." Kreutzer opined that, set beside Alkan's conception, Joseph Haydn's Creation was a "mere candle (lampion)." A further missing work is a one-act opera, mentioned frequently in the French musical press of 1846-7 as being shortly to be produced at the Opéra-Comique, which however never materialized. Alkan also referred to this work in a letter of 1847 to the musicologist François-Joseph Fétis, stating that it had been written "a few years ago." Its subject, title and librettist remain unknown. 
Question: What is the last name of the person who published only a few minor works between 1840 and 1844?
Example Output:
Morhange.