Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

Input: Consider Input: Paragraph- Sent 1: Fossils can be used to match up rock layers.
Sent 2: As organisms change over time, they look different.
Sent 3: Older fossils will look different than younger fossils.
Sent 4: Some organisms only survived for a short time before going extinct.
Sent 5: Knowing what organisms looked like at certain times also helps date rock layers.
Sent 6: Some fossils are better than others for this use.
Sent 7: The fossils that are very distinct at certain times of Earths history are called index fossils.
Sent 8: Index fossils are commonly used to match rock layers.
Sent 9: You can see how this works in Figure 2.30.
Sent 10: If two rock layers have the same index fossils, then they're probably about the same age.
Question: What helps to date rock layers?.

Output: Index fossils.

Input: Consider Input: Paragraph- Sent 1: And William Martinez, 28, who cut his medical school studies short because he couldn't afford the $39,000 in loans after two years of graduate school and four years of college.
Sent 2: Martinez works two jobs as a physician's assistant and supports his elderly parents and 8-year-old son.
Sent 3: Uncommon Good has a 22-member board of doctors, lawyers and representatives of Christian groups and is recruiting mentors.
Sent 4: One goal is to get the state Legislature to pass a law to provide loan forgiveness to medical professionals and lawyers who work with the poor.
Sent 5: Mintie said she hopes her organization can be a national model for other professions.
Sent 6: She is trying to bring legal aid services to the Inland Valley -- the closest legal aid office is in El Monte and represents 700,000 poor people throughout the San Fernando, San Gabriel and Inland valleys.
Sent 7: "Unless the legal aid is in the community, you can't say you are serving the poor," Mintie said.
Sent 8: Neal Dudovitz is the executive director of Neighborhood Legal Services of Los Angeles County, the legal aid office in El Monte.
Sent 9: He sees attorneys new to poverty law leave all the time because they can't afford the salary with their law school debt.
Sent 10: "She's really opened a lot of eyes in terms of having people understand how the educational debt is limiting and reducing the services that are available to low-income communities," Dudovitz said.
Sent 11: "Nancy is light years ahead of the curve on this stuff.
Sent 12: Very little is being done practically to solve it."Sent 13: Mintie, her colleagues say, could have made a lot of money in private practice.
Sent 14: "She's very kind and pleasant," said Julius Thompson, 45, an attorney at Inner City Law Center and an Uncommon Good recipient.
Sent 15: "But she's also a woman on a mission.
Sent 16: When she sets her sights on something, she's a formidable force.".
Question: What is the reason Neal Dudovitz sees so many new poverty law attorneys leave?.

Output: Low salary.

Input: Consider Input: Paragraph- Sent 1: Lucy is an eight year old girl who lives with her parents and pet bird.
Sent 2: One Saturday afternoon, she sits at the kitchen table.
Sent 3: She draws a picture of her family.
Sent 4: She makes sure to draw her mom named Martha wearing a purple dress, because that is her favorite.
Sent 5: She draws many yellow feathers for her pet bird named Andy.
Sent 6: After she is done, she gives the picture to her mom.
Sent 7: Her mom hangs it up on the silver refrigerator.
Sent 8: The next day, Lucy's mom comes home with a brown dog named Oliver.
Sent 9: She tells Lucy that she is pet-sitting, which is like babysitting but with a friend's dog.
Sent 10: Lucy's mom tells her she can play with the dog as long as she takes good care of him.
Sent 11: Lucy is excited.
Sent 12: She pets Oliver nicely on his soft back.
Sent 13: He wags his tail.
Sent 14: He barks, "Woof!"Sent 15: and shows he wants to play fetch with her.
Sent 16: Lucy giggles and throws a ball for him to catch.
Sent 17: She wishes her bird could play like this with her every day!.
Question: Is Oliver Lucy's dog?.
Output: No.