Question: Who owns the company that has a 215.1 meter tall tower?

Context paragraphs:
Space fountain: A space fountain is a proposed form of structure extending into space that, like a space elevator, can extend to geostationary orbit, but does not rely on tensile strength for support.  In contrast to the space elevator design, a space fountain is a tremendously tall tower extending up from the ground.  Since such a tall tower could not support its own weight using traditional materials, fast-moving pellets are projected upward from the bottom of the tower and redirected back down once they reach the top, so that the force of redirection holds the top of the tower aloft.  Payloads ascend or descend by coupling with this stream of pellets or by climbing up the side of the tower.  The space fountain has some advantages over a space elevator in that it does not require materials with extreme strength, can be located at any point on a planet's surface instead of just the equator, and can be raised to heights lower than the level of geostationary orbit.  Its major disadvantages come about from the fact that it is an extremely-high-energy active structure.  It requires constant power input to make up energy losses and remain erect.  The high energy content of the kinetic component of the structure also continually threatens to cause the collapse of the tower if the containment systems fail.

Massachusetts Military Reservation Wind Project: The Massachusetts Military Reservation Wind Project is located in Barnstable County, Massachusetts on the Massachusetts Military Reservation (MMR), also known as the Joint Base Cape Cod.  This Wind Project currently consists of one wind turbine, built in 2009, and two others recently completed in 2011.  The first turbine was a Fuhrländer 1500/77 wind turbine “with an 80 meter tower and a 77 meter rotor diameter.”  The two completed in 2011 were General Electric wind turbines.  Each of these GE 1.5-77 wind turbines outputs 1.5 MW of power on top of an 80 meter tall tower.  Therefore, the total net capacity for the MMR Wind project is approximately 4.5 MW.  Clearance may soon become available to build more turbines.  (See the “New Turbines” section below for more information).  The contracting company hired to build all three of the turbines is called ECC Corporate, and the plant code and utility ID of the facility are 57253 and 56619, respectively.

Lung Cu Flag Tower: Lũng Cú Flag Tower (Vietnamese: Cột cờ Lũng Cú) is a monument in northern Vietnam.  It is located in Lũng Cú commune of Dong Van district in Ha Giang province.  The monument consists of a 30 meter tall tower on the summit of Lũng Cú Peak (over 1,400 meters above sea level).  The tower is topped with a large Vietnamese flag.  The monument was built to mark the northernmost point in Vietnam, although the farthest north point on the Chinese-Vietnamese border is actually located over 3.3 km farther north.

Casa Domaine Towers: Casa Domaine is a residential complex of two towers, located at Tanah Abang in Jakarta, Indonesia.  "Casa Domaine Tower 1" is 230 meter tall, has 61 floor above the ground and 3 floor below the ground.  "Casa Domaine Tower 2" is 210 meter tall, has 57 floor above and 3 floor below the ground.  Both the towers topped off in March,2017.  Casa Domaine Tower 1 is currently the 2nd tallest residential building in Jakarta

Telecommunications Tower: Torre de las Telecomunicaciones (Telecommunications Tower) or Torre Antel (Antel Tower) is a 157 meter tall building with 35 floors in Montevideo, Uruguay.  It is the headquarters of Uruguay's government-owned telecommunications company, ANTEL, and is the tallest building in the country.  It was designed by architect Carlos Ott.  It is situated by the side of Montevideo's bay.  The tower was completed by American Bridge and other design/built consortium team members in 2002.

Treasury Tower: Treasury Tower is a 279.5 meter tall skyscraper at District 8 complex at Sudirman Central Business District (SCBD) in South Jakarta, and is currently the 2nd tallest building in Indonesia.  Architectural height of the tower is 279.5 meter & top floor is situated at 260.6 meter.  Construction & topped out was completed in 2016.  This is a commercial office tower at District 8 Jakarta complex.  District 8 is a mixed complex of 10 towers, of which 3 office towers including Treasury Tower, one hotel & 6 residential/apartment towers.

Vitosha Mountain TV Tower: Vitosha Mountain TV Tower, better known as Kopitoto (Bulgarian: Копитото , "The Hoof") after the rock outcrop (1,348 m) it stands on, is a 186 meter tall TV tower built of reinforced concrete on Vitosha Mountain near Sofia, Bulgaria.  The footprint of the tower has the shape of a hexagon with three of the sides extended (i.e. almost triangular).  From the tower there is a commanding view of Sofia, and the tower can be seen from everywhere in Sofia, making it a landmark of Sofia's skyline.  It is the second tallest television tower in Bulgaria.

Capital Place Office Tower: Capital Place Office Tower is a skyscraper at Jalan Jenderal Gatot Subroto in South Jakarta, Indonesia.  The tower is part of Capital Place complex, which also occupies by Four Seasons Hotel .  The office tower is a 215.1 meter tall, has 48 floors above & 6 floors below the ground.

Baphuon: The Baphuon (Khmer: ប្រាសាទបាពួន ) is a temple at Angkor, Cambodia.  It is located in Angkor Thom, northwest of the Bayon.  Built in the mid-11th century, it is a three-tiered temple mountain built as the state temple of Udayadityavarman II dedicated to the Hindu God Shiva.  It is the archetype of the Baphuon style.  The temple adjoins the southern enclosure of the royal palace and measures 120 metres east-west by 100 metres north-south at its base and stands 34 meters tall without its tower, which would have made it roughly 50 meters tall.  Its appearance apparently impressed Temür Khan's late 13th century envoy Chou Ta-kuan during his visit from 1296 to 1297, who said it was 'the Tower of Bronze...a truly astonishing spectacle, with more than ten chambers at its base.'  In the late 15th century, the Baphuon was converted to a Buddhist temple.  A 9 meter tall by 70 meter long statue of a reclining Buddha was built on the west side's second level, which probably required the demolition of the 8 meter tower above, thus explaining its current absence.  The temple was built on land filled with sand, and due to its immense size the site was unstable throughout its history.  Large portions had probably already collapsed by the time the Buddha was added.

Four Seasons Hotels and Resorts: Four Seasons Hotels Ltd., trading as Four Seasons Hotels and Resorts, is a Canadian international luxury hospitality company headquartered in Toronto, Ontario.  It operates more than 100 hotels worldwide.  Since 2007, Bill Gates and Prince Al-Waleed bin Talal have been majority owners of the company.

Supporting paragraphs: Capital Place Office Tower Four Seasons Hotels and Resorts
Answer: Bill Gates and Prince Al-Waleed