Task: Question Generation
Input (English): Passage: Married couple Caleb, a fire captain, and Catherine Holt, a hospital administrator, are experiencing marital difficulties. At work, Caleb underscores the importance of never leaving one's partner behind, but at home, he and Catherine argue copiously. Catherine accuses Caleb of being selfish due to his desire to buy a boat taking preference over paying for her mother's medical bills, and frustrated over his habitual use of internet pornography. Caleb feels unappreciated and undervalued. Their constant arguing causes Catherine to demand a divorce, to which an enraged Caleb agrees.
Caleb's coworker Michael and father John convince him to hold off on divorce proceedings. His father persuades him to try the Love Dare, a 40-day challenge for improving marriages by changing the way a spouse is treated. Caleb reluctantly agrees, though he decides not to tell Catherine. At the hospital where she works, Catherine has been openly flirting with Dr. Gavin Keller.
Caleb begins The Love Dare halfheartedly viewing the tasks as more of a checklist, while nurses at Catherine's hospital warn her not to trust him, as they interpret his actions as a way to butter her up for a better divorce settlement. With encouragement from his father and Michael, Caleb continues, though Catherine eschews his affections and grows closer to Dr. Keller. Finding Catherine unmoved, Caleb is consoled by his father while Michael reveals that he has been divorced. Caleb sustains burns on the job, and while being treated at the hospital where his wife works, Dr. Keller inadvertently discovers that Catherine is married and he is treating her husband, but continues his affections. Caleb continues The Love Dare with renewed faith and Catherine gives him an envelope petitioning for divorce.
Output (English): Who did not realize that Catherine was married?