Sentence 1: Last night there were three homicides in the city of Dallas, Texas. 
 Sentence 3: Someone robbed the pair and shot them in their home 
 Sentence 4:  Two blocks away, a teenager was shot and killed outside of a store 
 Sentence 5:  Police think that all three murders were committed by the same person 
 Given Sentence 2: Lisa and Monica are sisters who lost their brother and sister in law.