Sentence 1: Marsha needed a can of beans opened. 
 Sentence 3: She asked her boyfriend to open it with a knife instead 
 Sentence 4:  The man stabbed the lid several times until the lid could be pried up 
 Sentence 5:  Marsha thanked him for his help 
 Option 1: None of her openers were working. 
 Option 2: She used a knife to pry open the can.