Question: Paul-Werner Krapke is notable for his management of a main battle tank developed by who?

Context paragraphs:
VT-4: The VT4 main battle tank ( ), also known as the MBT3000, is a Chinese third generation main battle tank built by Norinco for overseas export.  It is an upgraded variant of the MBT2000 (VT-1) and the latest tank model from the Type 90-II tank family.

Main battle tank: A main battle tank (MBT), also known as a battle tank or universal tank, is a tank that fills the armor-protected direct fire and maneuver role of many modern armies.  Cold War-era development of more powerful engines, better suspension systems and lightweight composite armour allowed a tank to have the firepower of a super-heavy tank, armor protection of a heavy tank, and mobility of a light tank all in a package with the weight of a medium tank.  Through the 1960s, the MBT replaced almost all other tanks, leaving only some specialist roles to be filled by lighter designs or other types of armoured fighting vehicles.

Leopard 2: The Leopard 2 is a main battle tank developed by Krauss-Maffei in the 1970s for the West German Army.  The tank first entered service in 1979 and succeeded the earlier Leopard 1 as the main battle tank of the German Army.  Various versions have served in the armed forces of Germany and 12 other European countries, as well as several non-European nations, including Canada (Leopard 2A4m can), Chile, Indonesia, Singapore and Turkey.  The Leopard 2 was used in Kosovo with the German Army and has also seen action in Afghanistan with the Danish and Canadian contributions to the International Security Assistance Force, as well as seeing action in Syria with the Turkish Armed Forces against IS and the YPJ.

Type 99 tank: The Type 99 () or ZTZ99 is a Chinese third generation main battle tank (MBT).  The vehicle was a replacement for the aging Type 88 introduced in the late 1980s.  The Type 99 MBT was China's first mass-produced third generation main battle tank.

Tank EX: Tank Ex, or MBT Ex, was the code name of the main battle tank developed by the Indian Defence Research and Development Organisation (DRDO) in 2002.  It was rumoured the tank would be called "Karna", after one of the heroes of the Indian epic "The Mahabharata".  Tank Ex was developed as a second attempt after the development of the Ajeya (an upgraded T-72) by DRDO in order to capitalize on the technology developed for that project.  It underwent six months of trials, but was subsequently rejected by the Indian Army.  At least two Tank Ex prototypes were built.

Paul-Werner Krapke: Paul-Werner Krapke (born 1915) is a German armored fighting vehicle engineer, notable for his management of the Leopard 2 project.

Chieftain (tank): The FV4201 Chieftain was the main battle tank of the United Kingdom during the 1960s, 1970s and 1980s.  It was the "most formidable main battle tank in the world" at the time of its introduction in 1966 with the most powerful main gun and most effective armour of any tank yet made.  .  This was further improved while in service with Chobham armour upgrades.

CM-11 Brave Tiger: The CM-11 Brave Tiger (勇虎式戰車) is a Main Battle Tank (MBT) that was developed by the American General Dynamics and the Republic of China Army (ROCA) Armored Vehicle Development Center It was introduced to the public on 14 April 1990.  Being a variant of the M48 Patton, it is also known as the M48H Main Battle Tank.  The Ministry of National Defence is now acquiring the M1A1 Abrams to supplement the CM-11.

TR-85: The TR-85 is a main battle tank designed for the armed forces of Romania.  Based on the TR-77-580 (Romanian-built version of the Soviet T-55 tank), the TR-85 tank was developed from 1978 to 1985 and produced from 1986 until 1990.  A modernization program was initiated in March 1994 in order to upgrade the TR-85 tanks to NATO standards.  The result was the TR-85M1 main battle tank, currently the most modern tank in service with the Romanian Land Forces.  Although a further development of the T-55, the TR-85M1 uses a T-block powerpack (similar to the one used in the Leopard 1) based on a V8 German 830 hp diesel engine, an improved turret, a locally-designed "Ciclop" fire control system (with cross-wind sensor, laser rangefinder and night vision), new 100 mm BM-412 Sg APFSDS-T projectiles and a completely redesigned suspension with 6 road wheels on each side, protected by metal side skirts.  Combat weight is 50 tons.

Stingray light tank: The Stingray is a light tank produced by Textron Marine & Land Systems division (formerly Cadillac Gage).  It was specifically designed to use as many existing components of other American armored fighting vehicles as possible to keep costs down.  It was originally developed for the U.S. Army as a light tank—with firepower matching that of a main battle tank (MBT), while lacking the countermeasures to be considered a main battle tank—for the U.S. Army's Armored Gun System competition in the 1980s.  It was exported for use by armed forces of Thailand, who remains the only user.

Supporting paragraphs: Paul-Werner Krapke Leopard 2
Answer: Krauss-Maffei