Coal the heat and pressure of deep burial causes the loss of water, methane and carbon dioxide and an increase in the proportion of carbon. Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed. The wide, shallow seas of the Carboniferous Period provided ideal conditions for coal formation, although coal is known from most geological periods. The exception is the coal gap in the Permian–Triassic extinction event, where coal is rare. Coal is known from Precambrian strata, which predate land plants—this coal is presumed to
A Star Is Burns Hans Moleman, enter films. Festival attendees are particularly touched by Barney Gumble's artistic introspective film about alcoholism, titled "Pukahontas", which Marge and Jay foresee to be the eventual winner. Burns' film, directed by Steven Spielberg's non-union Mexican counterpart "Señor Spielbergo", is "A Burns for All Seasons", a big-budget pastiche of famous Hollywood productions intended to glorify him; the film is rejected by the audience. He bribes two of the judges, Krusty the Clown and Mayor Quimby, to vote for it, leading to a deadlock. Left with the tie-breaking vote, Homer enthusiastically votes for Hans' aptly-named "Man Getting Hit by Football",