Given a paragraph about movies, and a set of conversational question answers about the paragraph, generate a relevant question to the topic of the paragraph. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix 'Q:' followed by the answer prefix 'A:'.

Q: CONTEXT: For the same reason that Jeff doesn't immediately call the police with his suspicions: fear that if Thorwald realizes he has been made by an outside observer, he will dispose of all the evidence and escape without prosecution... Lisa is buying more time by being taken under arrest, and the event was intended to appease Thorwald to some extent. He was already making mistakes (retaining his wife's wedding ring due to sentimentality), and Lisa was clinging onto the thought that their plan was not yet foiled. The arrest itself was actually a means of getting Lisa safely out of the apartment, and of getting the wedding ring (as evidence) into the hands of the police. <sep> Q: Why didn't Lisa tell the truth about Thorwald to the police? A: For the same reason that Jeff doesn't immediately call the police with his suspicions Q: Why does she get herself arrested? A: Lisa is buying more time by being taken under arrest

A: Did Thornwald run away?
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Q: CONTEXT: They share the DNA of the irradiated spider, which is why they were pulled from their respective universes. It's the one thing they all have in common and is why Doc Ock (Or Liv, if you are friendlier with her than I am) says that the fact these extra spider people are here proves her theory will work to retrieve Fisk's wife and son from another universe. <sep> Q: How was Gwen pulled into Miles's universe? A: They share the DNA of the irradiated spider

A: How did that happen though?
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Q: CONTEXT: Ricin is extremely toxic. It has an LD50 (the lethal dose for 50% of people exposed) of 3040mg per kilogram when ingested (its much much more dangerous when introduced to the body in other ways). Guessing Lydia's weight at around 50kg (110 lbs) would lead one to think the LD50 would be no more than 2g of ricin. It has a military-developed antidote, which has had only limited trials in humans. Ricin is a chemical subject to the Chemical Weapons Convention, in the same schedule as nerve agents Sarin and VX. (All this information gleaned from Wikipedia) Walt also only told her when she'd already begun to experience symptoms, so less likely to recover even if treated. Even if she sought attention and gave them this information it seems unlikely that she would recover. Even if she's not been given a lethal dose, survivors of ricin often suffer from long term organ damage, so she would have a pretty miserable and presumably shortened life even if she does survive. I think Walt probably weighed her slim improved chances of survival, against the pleasure of knowing that she was aware who had done this to her. I considered an answer like @Keen's too perhaps she would not go to a hospital in fear of the attention, but I think this is less likely, even the risk averse would put fear of death above prison. <sep> Q: What is ricin? A: Ricin is a chemical subject to the Chemical Weapons Convention, in the same schedule as nerve agents Sarin and VX Q: Could Lydia get medical help and survive a ricin poisoning? A: Even if she sought attention and gave them this information it seems unlikely that she would recover

A:
Did Walter want Lydia to survive?
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