Sentence 1: Several people were walking around the mall. 
 Sentence 3: Several people noticed and decided to run away 
 Sentence 4:  In addition, the security guards noticed the kid 
 Sentence 5:  They confiscated the knife and arrested him 
 Option 1: A 12 year old kid was walking around with a butcher knife. 
 Option 2: A 12 year old was running around and looking for his parents.