Sentence 1: Silvia went grocery shopping. 
 Sentence 3: She looked around her and saw that no one was looking 
 Sentence 4:  She removed her sandal and a small rock fell down on the floor 
 Sentence 5:  Relieved, she put her sandal back on and continued shopping 
 Given Sentence 2: When looking at fruits in the fruit section, her foot started to hurt.