Sentence 1: At the grocery store Jenny was about to pay for her groceries. 
 Sentence 3: At that moment the lady behind her swiped her credit card 
 Sentence 4:  Jenny was so surprised about this random act of kindness 
 Sentence 5:  The lady told her to pay it forward next time and gave her a hug 
 Given Sentence 2: It was black with big wheels.