You are given a paragraph, with numbered sentences, and a question. Write the numbers of the sentences needed to answer the given question. Separate multiple sentence numbers with a comma (", "). E.g. "1, 2" would be the correct response if Sent 1 and Sent 2 are needed to answer the given question (do not include sentences that contain no information that is necessary to answer the question). Sort the sentence numbers in an increasing order (i.e., '1, 2', instead of '2, 1'). Your answer should not contain anything than the sentence numbers separated by a comma (e.g. '1, 2, 3, 4'). The given question requires more than one sentence to answer. So, your answer must contain at least one comma (", ").

[Q]: Paragraph- Sent 1: '' The Octopus , '' a masked crime lord , is bent on crippling the nation with a wave of terror .
Sent 2: He starts with the transportation system and then moves onto industry .
Sent 3: He demands tribute from railroad magnates and other captains of industry .
Sent 4: Richard Wentworth , an amateur criminologist who is friendly with the police , is secretly '' The Spider , '' a masked vigilante equally determined to wipe the Octopus and his gang off the face of the earth .
Sent 5: Pleasant and smiling in civilian life , Wentworth is often ruthless as the Spider , slinging two guns against the public enemies who attack him .
Sent 6: Wentworth also masquerades as affable underworld lowlife Blinky McQuade .
Sent 7: Disguised as McQuade , Wentworth can infiltrate gangland at the hired-gun level and keep current on the gang 's plans .
Sent 8: The only people who know Wentworth 's other identities are his assistants Jackson and Ram Singh , his butler Jenkins , and his fianc e Nita .
Sent 9: The Octopus was a villain in a single issue pulp believed to have been written by Norvell Page who wrote most of The Spider pulp stories .
Sent 10: He is garbed completely in white and is only ever seen sitting in a chair .
Sent 11: Unlike the pulps , The Spider is garbed in a lightweight full length costume with web-like markings on it which resemble Spiderman 's costume .
Sent 12: The serial follows the standard formula of fights , shoot-outs , Wentworth 's friends being kidnapped at various times and having to be rescued .
Sent 13: Each chapter ends with The Spider or his friends in deep trouble , often about to be killed , but the effect is spoiled by a trailer for the next episode which shows them in full health and fighting the villains .
Question: Who demands tribute from captains of industry?.
[A]: 1, 3.

[Q]: Paragraph- Sent 1: Are there other examples of static discharge?
Sent 2: The answer is yes.
Sent 3: Lightning is a form of static discharge.
Sent 4: It is much more dramatic than what happens to your hand.
Sent 5: You can see how it occurs in the following diagram.
Sent 6: You have probably seen lightning in a rainstorm.
Sent 7: What does lighting have to do with static electricity?
Sent 8: As it turns out, everything.
Sent 9: During a rainstorm, clouds are pushed along by the wind.
Sent 10: Clouds develop regions of different charges.
Sent 11: This happens due to the movement of air molecules, water drops, and ice particles.
Sent 12: The negative charges are mostly at the base of the clouds.
Sent 13: The positive charges are mostly at the top.
Sent 14: The charges continue to build up.
Sent 15: Suddenly, you see the large discharge.
Sent 16: This is what we see as lightning.
Sent 17: In the video below, you can watch an awesome slow-motion lightning strike.
Sent 18: Be sure to wait for the real-time lightning strike at the end of the video.
Question: When clouds are pushed forward by wind, they develop what?.
[A]: 9, 10.

[Q]: Paragraph- Sent 1: Fossils give clues about major geological events.
Sent 2: Fossils can also give clues about past climates.
Sent 3: Fossils of ocean animals on the top of a mountain?
Sent 4: Ocean animals have been found on the Earths tallest mountain.
Sent 5: Its hard to believe, but it is true.
Sent 6: These fossils were found at the top of Mt. Everest.
Sent 7: Mt. Everest is the highest mountain on Earth.
Sent 8: These fossils showed that this entire area was once at the bottom of a sea.
Sent 9: It can only mean that Mt. Everest was uplifted.
Sent 10: In fact, the entire Himalaya mountain range was raised.
Sent 11: It was forced up from the collision of two continents.
Sent 12: Fossils of plants are found in Antarctica.
Sent 13: Now, Antarctica is almost completely covered with ice.
Sent 14: Plants do not grow in Antarctica.
Sent 15: According to fossils, they once did.
Sent 16: This means that Antarctica was once much warmer than it is now.
Sent 17: These fossils tell us about Antarcticas past climate.
Question: What is an example of fossils providing evidence of major geological changes?.
[A]:
4, 6, 8, 9, 11.