Question: Given the following context: Three species of mangrove trees exist in the region: red (Rhizophora mangle), black (Avicennia germinans), and white (Laguncularia racemosa), although all are from different families. All have the same characteristics: they are tolerant of salt, brackish, and fresh water; they grow in oxygen-poor soil; and they can survive drastic water-level changes. Black and white mangroves excrete salt from under their leaves, and red mangroves filter the salinity of sea water. All species are integral to coastline protection during severe storms. Red mangroves, for example, have far-reaching roots that trap sediments. The trees not only stabilize coastlines, but add land as more sand and decaying vegetation is trapped in the root systems. All three mangroves also absorb the energy of waves and storm surges. The estuaries act as fisheries for fry and nurseries for crustaceans. Shrimp, oysters, crabs, whelks, cockles, and snails thrive in these waters, as do primordial horseshoe crabs (Limulus polyphemus). The region supports a $59 million-a-year Tortugas pink shrimp (Farfantepenaeus duorarum) industry, and a $22 million-a-year stone crab (Menippe mercenaria) industry. Between 80 and 90 percent of species that are harvested commercially in Florida are born or spend time in the shallow waters near the Everglades. Oysters and mangroves work in tandem to build up the coastline. The sand around the coastline has minute white particles of quartz and fine shells. When currents are right, oysters grow in colonies or beds, and deposit their shells, reinforcing the bed. Mangrove seeds, called propagules, are full embryos and float in water until they reach a favorable location and take root, often on oyster beds. They shed skin and litter, ensuring other trees will not compete for space and nutrients.Mangroves also serve as excellent rookeries for birds. Wading birds, such as roseate spoonbills (Platalea ajaja), egrets, and tricolored herons (Egretta tricolor) use the mangroves as a nursery, due to the proximity of food sources... answer the following question: What is the name of the region in which three species of mangrove trees exist?
Answer: the Everglades

Question: Given the following context: In 2010 Starr self-produced and released his fifteenth studio album, Y Not, which included the track "Walk with You" and featured a vocal contribution from McCartney. Later that year, he appeared during Hope for Haiti Now: A Global Benefit for Earthquake Relief as a celebrity phone operator. On 7 July 2010, he celebrated his 70th birthday at Radio City Music Hall with another All-Starr Band concert, topped with friends and family joining him on stage including Ono, his son Zak, and McCartney.Starr recorded a cover of Buddy Holly's "Think It Over" for the 2011 tribute album Listen to Me: Buddy Holly. In January 2012, he released the album Ringo 2012. Later that year, he announced that his All-Starr Band would tour the Pacific Rim during 2013 with select dates in New Zealand, Australia and Japan; it was his first performance in Japan since 1996, and his debut in both New Zealand and Australia. In January 2014, Starr joined McCartney for a special performance at the 56th Annual Grammy Awards in Los Angeles, where they performed the song "Queenie Eye". That summer he toured Canada and the US with an updated version of the Twelfth All-Starr Band, featuring multi-instrumentalist Warren Ham instead of saxophonist Mark Rivera. In July, Starr became involved in "#peacerocks", an anti-violence campaign started by fashion designer John Varvatos, in conjunction with the David Lynch Foundation. In September 2014, he won at the GQ Men of the Year Awards for his humanitarian work with the David Lynch Foundation.In January 2015, Starr tweeted the title of his new 11-track studio album, Postcards from Paradise. The album came just weeks in advance of Starr's induction into the Rock and Roll Hall of Fame, and was released on 31 March 2015 to mixed to positive reviews. Later that month, Ringo and his band announced a forthcoming Summer 2016 Tour of the US. Full production began in June 2016 in Syracuse.On 7 July 2017 (his 77th birthday), he released a new single entitled "Give More Love," followed by, on 15 September 2017 (by... answer the following question: What is the last name of the person who toured Canada and the US with an updated version of the Twelfth All-Starr Band, featuring multi-instrumentalist Warren Ham instead of saxophonist Mark Rivera?
Answer: Starr

Question: Given the following context: Married couple Caleb, a fire captain, and Catherine Holt, a hospital administrator, are experiencing marital difficulties. At work, Caleb underscores the importance of never leaving one's partner behind, but at home, he and Catherine argue copiously. Catherine accuses Caleb of being selfish due to his desire to buy a boat taking preference over paying for her mother's medical bills, and frustrated over his habitual use of internet pornography. Caleb feels unappreciated and undervalued. Their constant arguing causes Catherine to demand a divorce, to which an enraged Caleb agrees. Caleb's coworker Michael and father John convince him to hold off on divorce proceedings. His father persuades him to try the Love Dare, a 40-day challenge for improving marriages by changing the way a spouse is treated. Caleb reluctantly agrees, though he decides not to tell Catherine. At the hospital where she works, Catherine has been openly flirting with Dr. Gavin Keller. Caleb begins The Love Dare halfheartedly viewing the tasks as more of a checklist, while nurses at Catherine's hospital warn her not to trust him, as they interpret his actions as a way to butter her up for a better divorce settlement. With encouragement from his father and Michael, Caleb continues, though Catherine eschews his affections and grows closer to Dr. Keller. Finding Catherine unmoved, Caleb is consoled by his father while Michael reveals that he has been divorced. Caleb sustains burns on the job, and while being treated at the hospital where his wife works, Dr. Keller inadvertently discovers that Catherine is married and he is treating her husband, but continues his affections. Caleb continues The Love Dare with renewed faith and Catherine gives him an envelope petitioning for divorce. answer the following question: Who did not realize that Catherine was married?
Answer:
Dr. Gavin Keller