Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Input: Consider Input: Context: Louis Philippe I (6 October 1773 -- 26 August 1850) was King of the French from 1830 to 1848 as the leader of the Orleanist party. 
 Question: What nationality was Louis Philippe I?

Output: french


Input: Consider Input: Context: Lake Forest High School Clubs Environmental Club Club members are provided opportunities to realize their goals of environmental service. The majority of projects are student-initiated. Last year's activities included: the LFHS Courtyard Garden upkeep, Bike to School Day with free cocoa and snacks, an "eat local" 100-mile dinner, recycling solutions for LFHS, beach cleanup through the Great Lakes Alliance, and Earth Week celebrations. Meetings: First Friday of the month in Room 5 at 7:00 a.m. Advisor: Ms Mary Beth Nawor, _ Peer Tutoring Students volunteer to help fellow students in improving their academic and organizational skills. Students tutor LFHS and middle school students on an individually scheduled basis. LFHS tutors must have proficiency in the academic area in which they wish to tutor, but middle school tutors only need general academic proficiency. Meetings: All tutoring is done on an individually scheduled basis. Advisor: Ms Kathy O'Hara, _ Young Idea Young Idea is LFHS's art and literary magazine. Students of all ages who love writing and art are encouraged to become part of the staff of this award-winning magazine. Young Idea encourages all students to submit art and literature works to the magazine, whether they are a part of the staff or not. From September to February, Young Idea meets on Thursdays after school in the Public Room to discuss the pieces that have been submitted to the magazine and provide feedback for the authors. Meetings: See above explanation. Advisor: Ms Debbie Zare, _ Scout Buddies Scout Buddies is a friendship club which helps build friendship among individuals with and without disabilities. Club members participate in a variety of social activities both within the school and in the community. Activities include organizing holiday parties in the school, bowling, going to the movies, and eating out in local restaurants. Meetings: Monthly meeting dates vary, but in Room 134. Advisor: Ms Donna Lovitsch, _ 
 Question: Which club provides help for students poor in study?

Output: peer tutoring.


Input: Consider Input: Context: How high or low a sound seems to a listener is its pitch. Pitch, in turn, depends on the frequency of sound waves. Wave frequency is the number of waves that pass a fixed point in a given amount of time. High-pitched sounds, like the sounds of the piccolo in the Figure 1.1, have high-frequency waves. Low-pitched sounds, like the sounds of the tuba Figure 1.1, have low-frequency waves. The frequency of sound waves is measured in hertz (Hz), or the number of waves that pass a fixed point in a second. Human beings can normally hear sounds with a frequency between about 20 Hz and 20,000 Hz. Sounds with frequencies below 20 hertz are called infrasound. Infrasound is too low-pitched for humans to hear. Sounds with frequencies above 20,000 hertz are called ultrasound. Ultrasound is too high-pitched for humans to hear. Some other animals can hear sounds in the ultrasound range. For example, dogs can hear sounds with frequencies as high as 50,000 Hz. You may have seen special whistles that dogsbut not peoplecan hear. The whistles produce sounds with frequencies too high for the human ear to detect. Other animals can hear even higher-frequency sounds. Bats, like the one pictured in the Figure 1.2, can hear sounds with frequencies higher than 100,000 Hz! Q: Bats use ultrasound to navigate in the dark. Can you explain how? A: Bats send out ultrasound waves, which reflect back from objects ahead of them. They sense the reflected sound waves and use the information to detect objects they cant see in the dark. This is how they avoid flying into walls and trees and also how they find flying insects to eat. 
 Question: what is the highest-frequency sound that humans normally can hear?


Output: 20,000 hz