Sentence 1: Lulu loved to watch the birds outside. 
 Sentence 3: One day, Lulu slept through her alarm 
 Sentence 4:  If she didn't wake up she would miss her train 
 Sentence 5:  Her bird friends expected her, and woke her up just in time 
 Given Sentence 2: She'd listen to them twitter and tweet and give them seeds in return.