Definition: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Input: Passage: In 2007, the Land Forces consisted of 29,600 soldiers (6th Guards Mechanised Brigade (Grodno), 11th Guards Mechanized Brigade at Slonim, the 120th Guards Mechanised Brigade (Minsk), 38th and 103rd Mobile Brigades (organized similarly to Soviet airborne regiments, not all of them are equipped with BMD-1), 5th Spetsnaz Brigade (Maryina Horka), five artillery brigades and four regiments, two MRL regiments, 15th, 29th, 115th, 120th and 302nd SAM Brigades, two SSM brigades, two brigades and one regiment of engineers, 8th independent NBC Brigade, two signals brigades, 40th independent NBC battalion. Army equipment includes 1800 main battle tanks (MBT) and 2600 AFV/APC. The weapons and equipment storage bases include the 50th (Brest), 19th, 34th Tank Division & 37th Guards Tank Division (former tank divisions), 3rd Guards Tank Division, and 28th (Baranovichi). Weapons storage bases that have been disbanded include the 29th, 30th, 193rd Tank Division, and the storage base that used to be the 8th Guards Tank Division at Marina Gorka.
Question: How many more artillery brigades were there than MRL regiments?
Answer type: Number
Output:
3.