You're given a fill-in-the-blank question where the answer is PersonX. You need to minimally change the given question so that the answer flips to PersonY. This task typically involves replacing one word i.e., the 'trigger word' with its antonym (e.g., changing from "sympathetic" to "stern"). You should not change any content in the given question beyond a word or two i.e. the trigger word/phrase. PersonX and PersonY should not be equally likely to fill the blank. For your question, PersonY should be a well-agreed answer to fill in the blank. Your generations should NOT contain potentially explicit, offensive, or adult content. Do not use the names of real people or generic names (e.g., Donald Trump, John Doe, etc.) in your question. Avoid repeating the same style or phrase in generating your modified question e.g. this task can be always solved using a simple negation i.e. by adding not, never, etc. Instead, try to increase the word diversity. Your question must contain at least 15 and at most 30 words. Your question must have at least 70% overlapping words with the given question. You must utilize the given context word while writing the question. Your question must contain only one blank. Make sure that PersonX and PersonY have the same gender. In your question, PersonX and PersonY should be used only ONCE and PersonX should appear earlier than PersonY. Although there are many correct answers, you only need to write one of them.

Context Word: knife. 
Question: Everyone liked the PersonX's new knife more than PersonY's because _ spent more money on it. 
Answer: PersonX
Everyone liked the PersonX's new knife more than PersonY's because _ spent less money on it.

Context Word: apply. 
Question: PersonX was very keep to apply for the job but PersonY was not because _ was very diligent. 
Answer: PersonX
PersonX was very keep to apply for the job but PersonY was not because _ was very lazy.

Context Word: concrete. 
Question: PersonX sanded concrete at work, while PersonY worked in an office, so _ had to wear a dust mask because he was at high risk for silicosis. 
Answer: PersonX

PersonX sanded concrete at work, while PersonY worked in an office, so _ did not have to wear a dust mask because he was at low risk for silicosis.