The 1997 Pacific typhoon season has no official bounds; it ran year-round in 1997, but most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November.
 These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
 This was the most active tropical cyclone season ever recorded, with a record ten Category 5 storms forming and with an ACE of 594.11.
Typhoon Rammasun, known in the Philippines as Typhoon Glenda, was one of only three Category 5 super typhoons on record in the South China Sea, with the others being Pamela in 1954 and Meranti in 2016.
 Rammasun had destructive impacts across the Philippines, South China, and Vietnam in July 2014.
 It was the seventh tropical cyclone of the season to be named by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
 Rammasun is a Siamese word for thunder god.
 After Lingling and Kajiki earlier in 2014, Rammasun became the third tropical cyclone, and first typhoon to directly impact the Philippines in 2014.
 The storm formed in the Intertropical Convergence Zone, an area near the equator where the northeast and southeast trade winds come together, and slowly drifted northwest.
 Having passed through the islands of Micronesia, the system turned west and quickly moved under the influence of a subtropical ridge (STR).
 Rammasun posed a significant threat to the Philippine island of Luzon, as it was expected to reach typhoon intensity before making landfall there.
 Though initially forecast to make landfall in Cagayan Valley, the storm followed a more westerly path and was later forecast to make landfall in the Bicol Region and then pass through Bataan and Zambales before brushing past Metro Manila.
Typhoon Oliwa was one of a record eleven super typhoons in the 1997 Pacific typhoon season.
 It formed in the central Pacific Ocean on September 2 to the southwest of Hawaii, but it became a typhoon in the western Pacific.
 Oliwa explosively deepened on September 8, increasing its winds from 85 mph to 160 mph in a 24‑hour period.
 Afterward, it slowly weakened, and after passing east of Okinawa, Oliwa turned northeast and struck Japan with winds of 85 mph (140 km/h).
 There, it affected 30,000 people and killed 13; thousands of houses were flooded, and some were destroyed.
 Offshore South Korea, the winds and waves wrecked 28 boats, while one boat went missing with a crew of 10 people.
 Typhoon Oliwa dissipated on September 19 in northern Pacific Ocean near the International Date Line.
The 2015 Pacific typhoon season was a slightly above average season that produced 27 tropical storms, 18 typhoons, and nine super typhoons.
 The season ran throughout 2015, though most tropical cyclones typically develop between May and November.
 The season's first named storm, Mekkhala, developed on January 15, while the season's last named storm, Melor, dissipated on December 17.
 The season saw at least one named tropical system forming in each of every month, the first time since 1965.
 Similar to the previous season, this season saw a high number of super typhoons.
 Accumulated cyclone energy (ACE) during 2015 was extremely high, the second highest since the 1970, and the 2015 ACE has been attributed in part to anthropogenic warming.
Typhoon Joan of October 1997 was the longest-lasting super typhoon at the time, maintaining 1-minute maximum sustained winds of at least 240 km/h (150 mph) for 4.5 days.
 Joan, concurrently with Typhoon Ivan to its west, also became the strongest typhoons at the same time in the northwest Pacific Ocean.
 The 25th named storm during the active 1997 Pacific typhoon season, Joan developed from the same trough as Typhoon Ivan on October 11.
 It moved northwestward and later to the west, undergoing explosive deepening to its peak intensity on October 15.
 One typhoon warning agency estimated that Joan was among the strongest storms on record in the basin, and that Ivan and Joan marked the first occurrence of simultaneous super typhoons.
 While near peak intensity, Joan passed between Anatahan and Saipan in the Northern Marianas Islands.
 Later, the typhoon weakened and turned to the north and east, becoming extratropical on October 24.
The 2007 Atlantic hurricane season was an active Atlantic hurricane season, although most of the storms were weak and short-lived.
 However, the 2007 season was the first season to feature more than one Category 5 landfalling hurricane, a feat that would not be matched until 2017.
 It produced 17 tropical cyclones, 15 tropical storms, six hurricanes, and two major hurricanes.
 It officially started on June 1 and ended on November 30, dates which conventionally delimit the period during which most tropical cyclones form in the Atlantic Ocean.
 The first tropical cyclone, Subtropical Storm Andrea, developed on May 9, while the last storm, Tropical Storm Olga, dissipated on December 13.
 The most intense hurricane, Dean, is tied for the eighth most intense Atlantic hurricane ever recorded as well as the third most intense Atlantic hurricane at landfall.
 The season was one of only six on record for the Atlantic with more than one Category 5 hurricane.
 It was the second on record in which an Atlantic hurricane, Felix, and an eastern Pacific hurricane, Henriette, made landfall on the same day.
 September had a record-tying eight storms, although the strengths and durations of most of the storms were low.
 Aside from hurricanes Dean and Felix, none of the storms in the season exceeded Category 1 intensity.
Typhoon Keith was the tenth of a record eleven super typhoons to develop during the unusually intense 1997 Pacific typhoon season.
 Originating from a near-equatorial trough on October 26, the precursor depression to Keith slowly organized into a tropical storm.
 After two days of gradual strengthening, the storm underwent a period of rapid intensification on October 30 as winds increased to 195 km/h (120 mph).
 On November 1, the storm further intensified into a super typhoon and later attained peak winds of 285 km/h (180 mph).
 The following day, the powerful storm passed between Rota and Tinian in the Northern Mariana Islands.
 After fluctuating in strength over the following few days, a steady weakening trend established itself by November 5 as the typhoon accelerated towards the northeast.
 On October 8, Keith transitioned into an extratropical cyclone and was last noted early the following day near the International Dateline.
The 1932 Atlantic hurricane season was the period during 1932 in which tropical cyclones formed in the Atlantic Basin.
 It was a relatively active season, with fifteen known storms, six hurricanes, and four major hurricanes.
 Two storms attained Category 5 intensity, the first known occurrence in which multiple Category 5 hurricanes formed in the same year.
 The season began with the formation of Tropical Storm One on May 5, and ended with the dissipation of Hurricane Fourteen, also known as the 1932 Cuba hurricane, on November 14.
 Tropical cyclones that did not approach populated areas or shipping lanes, especially if they were relatively weak and of short duration, may have remained undetected.
 Because technologies such as satellite monitoring were not available until the 1960s, historical data on tropical cyclones from this period are often not reliable.
 The Atlantic hurricane reanalysis project discovered four new tropical cyclones, all of which were tropical storms, that occurred during the year.
 These storms were later added to the HURDAT database.
The 2013 Pacific typhoon season was the most active Pacific typhoon season since 2004, as well as the deadliest since 1975.
 It was an above-average season with 31 named storms, 13 typhoons, and five super typhoons.
 The season's first named storm, Sonamu, developed on January 4 while the season's last named storm, Podul, dissipated on November 15.
 Most of the first seventeen named storms before mid-September were relatively weak, as only two of them reached the typhoon strength.
The 2002 Pacific typhoon season was an active season, with many tropical cyclones affecting Japan and China.
 Every month had tropical activity, with most storms forming from July through October.
 Overall, there were 44 tropical depressions declared officially or unofficially, of which 26 became named storms; of those, there were 15 typhoons, which is the equivalent of a minimal hurricane, while 8 of the 15 typhoon intensified into super typhoons unofficially by the JTWC.

Question: yphoon Oliwa was one of a record eleven super typhoons in a season with how many Category 5 storms?
Answer: ten