Sentence 1: Oscar wanted to learn about the planets. 
 Sentence 3: He learned a lot about the constellations and the universe 
 Sentence 4:  Oscar decided to get some books on the subject 
 Sentence 5:  The planetarium show had inspired him! 
 Option 1: He went to the school, and saw a video. 
 Option 2: He went to the planetarium and saw a show.