Problem: How does the sentence end?

While the avalanche was out of control, the earthquake had subsided.  The 
Answer: avalanche continued to be dangerous.

Problem: How does the sentence end?

John fertilized the lawn but not the potted plant so the 
Answer: lawn was more green.

Problem: How does the sentence end?

Benjamin went to the zoo and asked Eric where the parrots were, because 
Answer: Eric was an employee.

Problem: How does the sentence end?

Mary replaced the gasket but not the compressor of her refrigerator, because the 
Answer:
compressor is still good.