Q: Information: - Gold is a chemical element with the symbol Au (from ) and the atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native) form, as nuggets or grains, in rocks, in veins, and in alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum) and also naturally alloyed with copper and palladium. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). - Pyrrhotite is an iron sulfide mineral with the formula Fe ( 1 - x ) S ( x = 0 to 0.2 ) . It is a nonstoichiometric variant of FeS , the mineral known as troilite . Pyrrhotite is also called magnetic pyrite , because the color is similar to pyrite and it is weakly magnetic . The magnetism decreases as the iron content increase , and troilite is non-magnetic . - Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Only a few substances are ferromagnetic; the most common ones are iron, nickel and cobalt and their alloys. The prefix "" refers to iron, because permanent magnetism was first observed in lodestone, a form of natural iron ore called magnetite, FeO. - Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer forms on the surface and prevents further corrosion (passivation). Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickeliron meteorites that were not exposed to oxygen when outside Earth's atmosphere. - Sulfur or sulphur (see spelling and etymology) is a chemical element with symbolS and atomic number16. It is abundant, multivalent, and nonmetalic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S. Elemental sulfur is a bright yellow crystalline solid at room temperature. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. - Iron sulfide or Iron sulphide can refer to a range of chemical compounds composed of iron and sulfur. - Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon, along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. A fossil fuel, coal forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes that take place over time. - The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of "fool's gold". The color has also led to the nicknames "brass", "brazzle", and "Brazil", primarily used to refer to pyrite found in coal. Given the information, choose the subject and object entities that have the relation of 'streak color'.
A: pyrrhotite , black

Q: Information: - The 1936 Winter Olympics, officially known as the IV Olympic Winter Games (French: Les "IVes Jeux olympiques d'hiver") (German: "Olympische Winterspiele 1936"), were a winter multi-sport event which was celebrated in 1936 in the market town of Garmisch-Partenkirchen in Bavaria, Germany. Germany also hosted the Summer Olympics the same year in Berlin. 1936 is the last year in which the Summer and Winter Games were both held in the same country (the cancelled 1940 games would have been held in Japan, with that country likewise hosting the Winter and Summer games). - Martin P. Vangsli ( listed sometimes as Martin Peder Vangli ) was a Norwegian cross-country skier who was awarded the Holmenkollen medal in 1937 ( Shared with Olaf Hoffsbakken and Birger Ruud ) . At the 1931 FIS Nordic World Ski Championships , Vangsli earned a silver in the 50 km. - Olaf Hoffsbakken (2 September 1908 23 November 1986) was a Norwegian Nordic skier who competed in the 1930s. He won two silver medals at the 1936 Winter Olympics in Garmisch-Partenkirchen in both the Nordic combined and the 4 x 10km. - Skiing is a mode of transport, recreational activity and competitive winter sport in which the participant uses skis to glide on snow. Many types of competitive skiing events are recognized by the International Olympic Committee (IOC), and the International Ski Federation (FIS). - The Holmenkollen medal is Norwegian skiing's highest award for competitors. It signifies top placings in international championships and other international events, including the Holmenkollen events. Given the information, choose the subject and object entities that have the relation of 'sport'.
A:
martin p. vangsli , nordic combined