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.
Example: Paragraph- Sent 1: Obama was born on August 4, 1961, at Kapiʻolani Maternity & Gynecological Hospital in Honolulu, Hawaii.
Sent 2: He is the only President to have been born in Hawaii.
Sent 3: He was born to a white mother and a black father.
Sent 4: His mother, Ann Dunham (1942-1995), was born in Wichita, Kansas, of mostly English descent, with some German, Irish, Scottish, Swiss, and Welsh ancestry. Question: How old was Obama's mother when he was born?
Example solution: 19.
Example explanation: Obama was born in 1961. His mother was born in 1942 and 1961-1942=19. Therefore, any of the following responses are considred correct: '19' and 'almost twenty'.

Problem: Paragraph- Sent 1: Once upon a time there was a princess who lived in a high tower and she was not allowed to leave because of her mean mother.
Sent 2: One day she chose to leave but her mother would not let her.
Sent 3: The princess climbed out the window of the high tower and climbed down the south wall when her mother was sleeping.
Sent 4: She wandered out a good ways.
Sent 5: Finally she went into the forest where there are no electric poles but where there are some caves.
Sent 6: There she met a young man who was running.
Sent 7: His name was John.
Sent 8: John asked the princess why such a beautiful woman like her was out in the middle of a forest.
Sent 9: She said that she had been trapped for her whole life by an evil woman who said she was her mother.
Sent 10: The man said that he would take the princess to a castle that was near.
Sent 11: He also said that he thought that she may be the missing princess.
Sent 12: As they go through the forest they run into many problems.
Sent 13: They see that they are lost and have no way of finding where to go.
Sent 14: After several days pass, the princess climbs up to the top of a tree in order to find out where they are.
Sent 15: She sees that the castle where they want to go is not that far away and near a mountain.
Sent 16: After thinking of the best way to get there, John and the princess go to the castle where they live for the rest of their lives. 
Question: What was a problem the princess and John encountered?.

Solution: They realize that they are lost and have no way of finding where to go.