Question: Are Castle of Frankenstein and Modern Drummer both magazines?

full_context: Document 1: Revolver (magazine): Revolver is a bi-monthly rock and heavy metal magazine published by NewBay Media. Before covering heavy metal, rock & hard rock solely, it was a more mainstream oriented magazine. The magazine is structured in a manners similar to publications such as "Spin" while covering many avenues within the heavy metal and punk subcultures. It features cover stories (usually centering on a band's new release or upcoming tour), album reviews, instrument reviews, bulletins, and a celebrity advice column featuring letters to Vinnie Paul, former drummer for Pantera and Damageplan, and current member of hard rock supergroup Hellyeah. Vinnie took a hiatus from the column following the death of his brother, Dimebag Darrell (he was supposed to be replaced by Slipknot member Joey Jordison, who decided not to do it when Jordison found out he was replacing Paul) but returned to offer advice to readers about music, life, sex and other topics. The column has recently included Lzzy Hale from Halestorm fielding questions.
Document 2: Larry Ivie: Larry Ivie (1936–2014) was an American comics artist, writer, and collector who was active in comics fandom in the middle part of the 20th century, described by comics historian Bill Schelly as "the closest thing to an authority on comics that was available in the 1950's." He provided painted covers and other editorial material for early issues of "Castle of Frankenstein" magazine, then self-published the seven issues of his own newsstand magazine "Monsters and Heroes", for which he drew comic stories of his own superhero Altron Boy, in the mid-to-late '60s; had his art published in the magazines "Galaxy Science Fiction" and "If", co-created the comic book "T.H.U.N.D.E.R. Agents", and wrote several stories for Marvel Comics and the horror magazines "Creepy" and "Eerie". Born in Salt Lake City, Utah, to biologist Wilton Ivie and his wife Aleen, he moved to New York City in the mid 1950s to attend the School of Visual Arts, and with a large personal library of comic books and correspondence via fanzines became a prominent part of New York comics fan culture. He also made amateur films of superheros, influencing the amateur films of Donald F. Glut and appearing in two of his films. Ivie died of lung cancer in January 2014, aged 77.
Document 3: The Monster Times: The Monster Times was a horror film fan magazine created in 1972. Published by The Monster Times Publishing Co., it was intended as a competitor to "Famous Monsters of Filmland". Although the main editorial focus of the magazine was horror media, it also featured articles and reviews of modern and classic science fiction/fantasy movies and television series, as well as comic books. Each issue featured a fold-out centerfold poster usually based on that particular issue's feature story.
Document 4: Fangoria: Fangoria is an internationally distributed American horror film fan magazine, in publication since 1979. At the height of its popularity in the 1980s and early '90s it was the most prominent horror publication in the world.
Document 5: Electronic drum: An electronic drum, also known as digital drums or digital percussion, is a modern electronic musical instrument, a special type of synthesizer or sampler, primarily designed to serve as an alternative to an acoustic drum kit or other percussion instruments. An electronic drum consists of an electronic or digital sound module which produces the synthesized or sampled percussion sounds and one or more electric sensors to trigger the sounds. Like regular drums, the sensors are struck by drum sticks or by the hands (depending on the type of drum pad) and they are played in a similar manner as an acoustic drum kit.
Document 6: Warren Publishing: Warren Publishing was an American magazine company founded by James Warren, who published his first magazines in 1957 and continued in the business for decades. Magazines published by Warren include "After Hours", "Creepy", "Eerie", "Famous Monsters of Filmland", "Help!", and "Vampirella".
Document 7: Bowling This Month: Bowling This Month is a Ten-pin bowling magazine which was started in 1994. Its official statement says that "if you're serious about bowling and you want to improve your scoring, you need the most up-to-date technical information available on subjects ranging from advanced technique through lane play to balls and ball motion. Each month Bowling This Month delivers the comprehensive information and instruction to help you bowl better, whether you average 180 or 230. Topics include: comprehensive new equipment reviews, lane play, ball motion and reaction, tips to improve mechanics, mental conditioning, physical conditioning, and an updated ball comparison chart."
Document 8: Unknown (magazine): Unknown (also known as Unknown Worlds) was an American pulp fantasy fiction magazine, published from 1939 to 1943 by Street & Smith, and edited by John W. Campbell. "Unknown" was a companion to Street & Smith's science fiction pulp, "Astounding Science Fiction", which was also edited by Campbell at the time; many authors and illustrators contributed to both magazines. The leading fantasy magazine in the 1930s was "Weird Tales", which focused on shock and horror. Campbell wanted to publish a fantasy magazine with more finesse and humor than "Weird Tales", and put his plans into action when Eric Frank Russell sent him the manuscript of his novel "Sinister Barrier", about aliens who own the human race. "Unknown"' s first issue appeared in March 1939; in addition to "Sinister Barrier", it included H. L. Gold's "Trouble With Water", a humorous fantasy about a New Yorker who meets a water gnome. Gold's story was the first of many in "Unknown" to combine commonplace reality with the fantastic.
Document 9: Castle of Frankenstein: Castle of Frankenstein was an American horror, science fiction and fantasy film magazine, published between 1962 and 1975 by Calvin Thomas Beck's Gothic Castle Publishing Company, distributed by Kable News. Larry Ivie - who also was cover artist for several early issues - and Ken Beale edited the first three issues. Writer-artist Bhob Stewart edited the magazine from 1963 into the early 1970s. Although promoted and sold as a "monster magazine," readers were aware that "Castle of Frankenstein", at the time, was the only nationally distributed magazine devoted to a legitimate and serious coverage of B movies. In addition to its central focus on classic and current horror films, "Castle of Frankenstein" also devoted pages to amateur filmmakers and fanzines. Its advertising pages sold full-length silent feature films such as "The Lost World" and "".
Document 10: Metal Hammer: Metal Hammer (sometimes "MetalHammer") is a monthly heavy metal music magazine, published in the United Kingdom by Future Plc and in several other countries by different publishers. "Metal Hammer" articles feature both mainstream bands and more unusual acts from the whole spectrum of heavy metal music.
Document 11: Vargo Statten Science Fiction Magazine: Vargo Statten Science Fiction Magazine (later Vargo Statten British Science Fiction Magazine, The British Science Fiction Magazine and The British Space Fiction Magazine) was a British science fiction magazine which published nineteen issues between 1954 and 1956. It was initially published by Scion Press, with control passing to a successor company, Scion Distributors, after Scion went bankrupt in early 1954. At the end of 1954, as part payment for a debt, Scion Distributors handed control of the magazine to Dragon Press, who continued it for another twelve issues. E.C. Tubb and John Russell Fearn were regular contributors, and Kenneth Bulmer also published several stories in the magazine. Barrington Bayley's first published story, "Combat's End", appeared in May 1954. The editor was initially Alistair Paterson, but after seven issues Fearn took the helm: "Vargo Statten" was one of Fearn's aliases, and the magazine's title had been chosen because of his popularity. Neither Paterson nor Fearn had enough of a budget to attract good quality submissions, and a printing strike in 1956 brought an end to the magazine's life.
Document 12: Famous Monsters of Filmland: Famous Monsters of Filmland is an American genre-specific film magazine, started in 1958 by publisher James Warren and editor Forrest J Ackerman.
Document 13: Drum!: DRUM! is a North American educational drumming magazine. It features artist profiles, product reviews, lessons and advanced transcriptions covering rock, pop and related styles of music. The magazine was launched in 1991 with Andy Doerschuk as editor. In the 1990s it gained a reputation for its coverage of younger drummers in contemporary styles such as punk, rap-rock, and metal. It was the first magazine to feature artists such as Tré Cool (Green Day), Chad Smith (Red Hot Chili Peppers), Travis Barker (Blink-182) and others on its covers.
Document 14: Guitarist (magazine): Guitarist is a monthly music making magazine published by Future plc in the United Kingdom. It is the longest-established European guitar magazine, and is currently the biggest selling guitar magazine in the UK. The magazine's current editor is Jamie Dickson, who has been in charge since late-2013. Each issue covers three areas: reviews, interview and technique. This may include reviews of newly released guitars, amplifiers and other equipment; interviews with famous and up-and-coming guitar players; and features on the guitar industry, news articles, playing technique with tablature. "Guitarist"'s slogan was previously 'The Guitar Player's Bible', however in 2012 this was changed to simply 'The Guitar Magazine'. In the June 2014 edition, "Guitarist" celebrated its 30th Anniversary.
Document 15: Modern Drummer: Modern Drummer is a monthly publication targeting the interests of drummers and percussionists. The magazine features interviews, equipment reviews, and columns offering advice on technique, as well as information for the general public. "Modern Drummer" is also available on the internet.
ground_truth: yes