Task: Question Answering
Input (English): Context_1 : Lettuce necrotic yellows virus (LNYV) is a plant virus belonging to the virus order "Mononegavirales", family "Rhabdoviridae" and genus "Cytorhabdovirus". It was first identified in Australia in the plant species "Lactuca sativa" in 1963 by Stubbs et al. Since then it has been identified in many other plant species including "Datura stramonium" and "Nicotiana glutinosa". The virus is transmitted by the insect vector "Hyperomyzus lactucae" the insect can become infected by feeding on an infected plant. It then acts as a reservoir for the virus in which it can multiply. The virus is also transmitted congenitally to its progeny Context_2 : Olea hochstetteri (East African olive, black ironwood) is a species of tree of the Oleaceae family, often considered a subspecies of Olea capensis. Like the related species Olea welwitschii, it grows in sandy desert regions of Kenya, Tanzania and Uganda. It is an inconspicuous plant that does not attain great height, in contrast to O. welwitschii which can attain a height of 25m. Context_3 : Emmenopterys is a genus of flowering plants in the Rubiaceae family. The genus is found in China, Burma, Thailand, and Vietnam. Context_4 : A halophyte is a plant that grows in waters of high salinity, coming into contact with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, marshes and sloughs and seashores. The word derives from Ancient Greek ἅλας (halas) 'salt' and φυτόν (phyton) 'plant'. An example of a halophyte is the salt marsh grass "Spartina alterniflora" (smooth cordgrass). Relatively few plant species are halophytes—perhaps only 2% of all plant species. Context_5 : Olea oleaster, the wild-olive, has been considered by various botanists a valid species and a subspecies of the cultivated olive tree, "Olea europea", which is a tree of multiple origins that was domesticated, it now appears, at various places during the fourth and third millennia BCE, in selections drawn from varying local populations. The wild-olive (Ancient Greek "kotinos"), which ancient Greeks distinguished from the cultivated olive tree (Ancient Greek ἐλάα), was used to fashion the olive wreath awarded victors at the ancient Olympic games. The ancient and sacred wild-olive tree of Olympia stood near the Temple of Zeus, patron of the games. Context_6 : The abundances of plant species are often measured by plant cover, i.e. the relative area covered by different plant species in a small plot. Plant cover is not biased by the size and distributions of individuals, and is an important and often measured characteristic of the composition of plant communities. Plant cover data may be used to classify the studied plant community into a vegetation type, to test different ecological hypothesis on plant abundance, and in gradient studies, where the effects of different environmental gradients on the abundance of specific plant species are investigated. Context_7 : Plagiobothrys hirtus, the rough popcornflower, is a plant species with only about a dozen reportedly extant occurrences, all within the Umpqua River watershed in Douglas County, Oregon. It is federally listed endangered in the United States of America. In fact "P. hirtus" is now considered to be one of the top three most endangered vascular plant species in the Northwest. The state of Oregon has ranked this plant as its number one recovery priority due to its high degree of threat as well as its high rating in recovery potential. Its recovery depends on conservation of existing populations as well as reintroduction of new populations in protected and species-appropriate areas. Context_8 : Alseuosmia macrophylla, the toropapa or karapapa, is a plant species in the family Alseuosmiaceae. This is a small evergreen shrub which is endogenous to New Zealand, along with two closely related species. An example occurrence of "A. macrophylla" is in the North Island habitat of the Hamilton Ecological District, where "Blechnum discolor" and "Blechnum filiforme" are understory elements with "Nothofagus truncata" and rimu overstory. This plant is known for the pleasant scent of its flowers, and its family name translates as "perfumed grove". The small red berries of toropapa are edible and sweet tasting. As a forest understory plant, toropapa will not tolerate full sunlight or frost, and needs its roots to stay moist and cool, however so long as these conditions are met it is reasonably hardy, and is sometimes cultivated as a garden plant. Context_9 : Olea is a genus of about 40 species in the family Oleaceae, native to warm temperate and tropical regions of southern Europe, Africa, southern Asia, and Australasia. They are evergreen trees and shrubs, with small, opposite, entire leaves. The fruit is a drupe. Leaves of "Olea" contain trichosclereids. Context_10 : Burkina Faso is largely wild bush country with a mixture of grass and small trees in varying proportions. The savanna region is mainly grassland in the rainy season and semi desert during the harmattan period (defined as the period when stormy and dusty Sahara winds blow dry and hot). Fauna, one of the most diverse in West Africa, includes the elephant, hippopotamus, buffalo, monkey, lions, crocodile, giraffe, various types of antelope, and a vast variety of bird and insect life. The country has 147 mammal species, 330 aquatic species including 121 species of fish and 2067 different plant species. Of the plant species, the dominant endemic species are shea tree "(Butyrospermum parkii") and the baobab, the former plant species has immense economic value to the country. fact_1 : Emmenopterys is a genus of flowering plants in the Rubiaceae family. fact_2 : Olea is a genus of about 40 species in the family Oleaceae, native to warm temperate and tropical regions of southern Europe, Africa, southern Asia, and Australasia. fact_3 :  They are evergreen trees and shrubs, with small, opposite, entire leaves. Question: Which plant species, Emmenopterys or Olea, is considered an Evergreen?
Output (English): Olea