IN: Several countries do not have formal diplomatic missions accredited to the United States. Consular duties for each country, except Kiribati and non-UN members, are instead managed by their respective diplomatic missions to the United Nations in New York.
does every country have an embassy in the us?

OUT: no

IN: A sphere (from Greek -- sphaira, ''globe, ball'') is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a ''circle'' circumscribes its ''disk'').
is a circle and a sphere the same?

OUT: no

IN: Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is filtered through Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon. When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When it is blocked by clouds or reflects off other objects, it is experienced as diffused light. The World Meteorological Organization uses the term ''sunshine duration'' to mean the cumulative time during which an area receives direct irradiance from the Sun of at least 120 watts per square meter. Other sources indicate an ''Average over the entire earth'' of ''164 Watts per square meter over a 24 hour day''.
is sunlight the same thing as visible light?

OUT: no

IN: The Kentucky Derby was first run at 1 1/2 miles (12 furlongs; 2.4 km) the same distance as the Epsom Derby. The distance was changed in 1896 to its current 1 1/4 miles (10 furlongs; 2 km). On May 17, 1875, in front of an estimated crowd of 10,000 people, a field of 15 three-year-old horses contested the first Derby. Under jockey Oliver Lewis, a colt named Aristides, who was trained by future Hall of Famer Ansel Williamson, won the inaugural Derby. Later that year, Lewis rode Aristides to a second-place finish in the Belmont Stakes.
are there always 20 horses in kentucky derby?

OUT:
no