TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: peer tutoring.

PROBLEM: Context: Restless leg syndrome (RLS) is a sensorimotor disorder. Clinical studies have implicated the dopaminergic system in RLS, while others have suggested that it is associated with insufficient levels of brain iron. To date, alterations in brain iron status have been demonstrated but, despite suggestions from the clinical literature, there have been no consistent findings documenting a dopaminergic abnormality in RLS brain tissue. In this study, the substantia nigra and putamen were obtained at autopsy from individuals with primary RLS and a neurologically normal control group. A quantitative profile of the dopaminergic system was obtained. Additional assays were performed on a catecholaminergic cell line and animal models of iron deficiency. RLS tissue, compared with controls, showed a significant decrease in D2R in the putamen that correlated with severity of the RLS. RLS also showed significant increases in tyrosine hydroxylase (TH) in the substantia nigra, compared with the controls, but not in the putamen. Both TH and phosphorylated (active) TH were significantly increased in both the substantia nigra and putamen. There were no significant differences in either the putamen or nigra for dopamine receptor 1, dopamine transporters or for VMAT. Significant increases in TH and phosphorylated TH were also seen in both the animal and cell models of iron insufficiency similar to that from the RLS autopsy data. For the first time, a clear indication of dopamine pathology in RLS is revealed in this autopsy study. The results suggest cellular regulation of dopamine production that closely matches the data from cellular and animal iron insufficiency models. The results are consistent with the hypothesis that a primary iron insufficiency produces a dopaminergic abnormality characterized as an overly activated dopaminergic system as part of the RLS pathology. 
 Question: Which deficiency is the cause of restless leg syndrome?

SOLUTION: iron

PROBLEM: Context: In the Atlantic, the West India Company concentrated on wresting from Portugal its grip on the sugar and slave trade, and on opportunistic attacks on the Spanish treasure fleets on their homeward bound voyage. Bahia on the north east coast of Brazil was captured in 1624 but only held for a year before it was recaptured by a joint Spanish-Portuguese expedition. In 1628, Piet Heyn captured the entire Spanish treasure fleet, and made off with a vast fortune in precious metals and goods that enabled the Company two years later to pay its shareholders a cash dividend of 70%, though the Company was to have relatively few other successes against the Spanish. In 1630, the Dutch occupied the Portuguese sugar-settlement of Pernambuco and over the next few years pushed inland, annexing the sugar plantations that surrounded it. In order to supply the plantations with the manpower they required, a successful expedition was launched in 1637 from Brazil to capture the Portuguese slaving post of Elmina, and in 1641 successfully captured the Portuguese settlements in Angola. In 1642, the Dutch captured the Portuguese possession of Axim in Africa. By 1650, the West India Company was firmly in control of both the sugar and slave trades, and had occupied the Caribbean islands of Sint Maarten, Curacao, Aruba and Bonaire in order to guarantee access to the islands' salt-pans. 
 Question: What were two things the West India Company desired?

SOLUTION:
sugar and slave trades