Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: A former high-class call girl has lifted the lid on how her secret profession servicing the rich and famous left her fearing for her life. Rachael Webster, 43, from Liverpool, spent 15 years working as an escort in London's West End, making up to £3,000 a week working for celebrity clients, including a male model known for his wild party lifestyle, and the brother of an A-List actor. But her customers also included gangsters, criminals and violent thugs, and Rachael believes on several occasions she was lucky not to have been killed. The mother-of-three said: 'At times men did do some really horrendous things to me, absolutely despicable things.Rachael Webster, 43, from Liverpool was a high class escort for 15 yearsClients included celebrities as well as gangsters and violent criminalsOne threatened to put her in a wheelchair and another grabbed her throatHas now written a book about her experiences as a tribute to her mum 
 Question:At 22 Rachael was a single mother living in a council house with her young daughter while working at a massage parlour in _.

Liverpool