sentence: Sam was not able to use the humidifier and instead used nasal spray to soothe his nose congestion, because the 
complete: humidifier was dirty.

sentence: The tornado demolished the house but left the barn intact, as the 
complete: barn was a rugged structure.

sentence: Sam gave away his books but kept his VHS tapes when he moved because the 
complete:
books are ubiquitous and worthless.