Definition: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Chipotle may open another restaurant chain called Better Burger. 
  
 The company filed a trademark request for that name earlier this month, and Chipotle (CMG) spokesperson Chris Arnold called it a "growth seed idea." 
  
 He added that "the Chipotle model could be applied to a wide variety of foods." 
  
 A recent public filing from the company elaborates, saying its "fundamental principles" are "finding the very best sustainably raised ingredients, prepared and cooked using classical methods in front of the customer, and served in an interactive format." 
  
 Related: U.S. firms jump on London burger bandwagon 
  
 Arnold pointed to two "growth seed" chains that the company is already investing in: ShopHouse and Pizzeria Locale. 
  
 Chipotle has opened 13 ShopHouse Southeast Asian Kitchen locations, which are all in the D.C., Los Anglees and Chicago areas. 
  
 And Chipotle says it has a "majority ownership interest" in Pizzeria Locale, which has two locations each in Denver and Cincinnati and three in the Kansas City, Missouri area. 
  
 In its annual report to investors filed February 5, Chipotle said it's proceeding with caution on those ventures, citing concerns the new concepts "might distract our management." 
  
 Related: Chipotle profits tank after E. coli scare 
  
 "[W]e do not expect ShopHouse, Pizzeria Locale or other concepts to contribute to our growth in a meaningful way for at least the next several years," the filing says. "We may also determine not to move forward with any further expansion of ShopHouse or Pizzeria Locale or to invest in other restaurant concepts." 
  
 The company also said its "immediate focus" remains on its flagship burrito chain, which has had a rough year. 
  
 Its stock is down nearly 30% over the last 12 months after Chipotle was rocked by food safety scandals. In late April, the company is expected to post its first-ever quarterly loss as a publicly traded company. ||||| CLOSE Earlier this month, Chipotle Mexican Grill filed a trademark for the name "Better Burger", hinting that the burrito chain is looking to open a new line of hamburger restaurants. USA TODAY 
  
 This Monday, Feb. 8, 2016, photo shows a sign on the window at a Chipotle Mexican Grill in Brandon, Fla. (Photo: Chris O'Meara, AP) 
  
 Chipotle Mexican Grill said Wednesday it has applied for a trademark for "Better Burger" as part of a business diversification move to open a burger restaurant chain. 
  
 "We have two non-Chipotle growth seeds open now ― ShopHouse and Pizzeria Locale ― and have noted before that the Chipotle model could be applied to a wide variety of foods," said Chris Arnold, a Chipotle spokesman. 
  
 ShopHouse, a Southeast Asian food chain, opened in 2013. Last year, Chipotle began expanding Pizzeria Locale, which specializes in wood-fired pizza, beyond its initial locations in Denver and Boulder, Colo. 
  
 Shares of Chipotle fell 65 cents, or 0.14%, in after-hours trading to $465.50. 
  
 The expansion plans are drawn up as the burrito maker is struggling to recover from an E.coli outbreak and other health safety issues that slowed its business much of last year. 
  
 In February, Chipotle, based in Denver, reported its worst quarterly performance as a publicly traded company. Its fourth-quarter net income fell 44% year-over-year to $67.9 million. And same-store sales were down 14.6%. 
  
 Chipotle didn't elaborate on its plans. With Americans' everlasting love of burgers, the gourmet burger market has gotten crowded in recent years, with new competitors hoping to emulate the success of Five Guys Burgers and Fries and Shake Shack. 
  
 U.S. burger restaurants generated about $73 billion in sales in 2014, according to trade publication Burger Business, citing data from food industry research firm CHD Expert. Burger joints account for 7.4% of all U.S. restaurants nationally, it said. 
  
 Shake Shack, founded by restaurateur Danny Meyer, said earlier this month its fourth-quarter sales rose 49.2% to $49.3 million. Same-restaurant sales, reported by the locations that have been open at least a year, climbed 11%. 
  
 By emphasizing its use of organic produce and naturally raised meat, Chipotle's popularity and sales have surged since its founding in 1993. But the company has been under investigation since October last year after an E. coli outbreak sickened more than 50 people in 11 states. A second outbreak of a different strain of E. coli in December affected five people in three states. Health officials also linked a Chipotle location in the Boston area in December to a norovirus outbreak in the region. 
  
 The outbreaks forced Chipotle to temporarily close multiple locations and implement new safety standards and food-handling procedures. The Centers for Disease Control and Prevention on Feb. 1 ended its investigation into the E. coli incidents at Chipotle, saying the outbreaks appear to be over. 
  
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Output:
What do you do when your burrito chain has been responsible for multiple outbreaks of E. coli and norovirus that sickened dozens of customers over the past six months? If you're Chipotle, you get into the burger business. Chipotle filed a trademark application for the name "Better Burger" this month, with a spokesperson noting the restaurant chain's "model could be applied to a wide variety of foods," Bloomberg reports. Chipotle has already started expanding two other restaurant concepts: ShopHouse and Pizzeria Locale. CNN quotes a public filing that states the Better Burger concept would be based on Chipotle's principles of "finding the very best sustainably raised ingredients, prepared and cooked using classical methods in front of the customer, and served in an interactive format." An expert tells Bloomberg the US market isn't yet saturated with burger chains. But beef prices are going down, beef consumption is going up, and sales at burger chains are outpacing those at Mexican chains, meaning Better Burger could be a profitable endeavor for Chipotle. And that's something the restaurant desperately needs. USA Today reports E. coli outbreaks in October and December sickened more than 50 people across multiple states. And a Boston Chipotle was linked to a norovirus outbreak that sickened 80 or so college students. Those cases led to a CDC investigation and the temporary closing of Chipotle locations. As a result, Chipotle stock has fallen 30% over the past 12 months, and sales dropped 26% in February alone.