Agatha Christie's travels with her archaeologist husband inspired her to write several mystery novels; travelers to Egypt can still stay at the Old Cataract Hotel, the model for the hotel in one of Christie's most famous books.

"¢ Agatha Christie's travels with her archaeologist husband inspired her to write several mystery novels
"¢ Agatha Christie used her travels with her archaeologist husband to inspire several mystery novels
"¢ Because her husband was an archaeologist, Agatha Christie was able to use their travels as inspiration for several of her mystery novels
"¢ Together with her archaeologist husband, Agatha Christie was inspired to incorporate their travel into several of her mystery novels
"¢ Agatha Christie's travels with her archaeologist husband served as inspiration for several of her mystery novels

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Experts please explain rules for, sub and object pronoun referent for possessive noun