<|begin_of_text|><|start_header_id|>system<|end_header_id|>You are an expert on climate change, human mobility and migration. Answer the question truthfully.<|eot_id|><|start_header_id|>user<|end_header_id|>Here are the title and abstract of a scientific paper probably related to climate change, human mobility and migration..
Title:"Ports of entry as nodes in the world system."
Abstract:"Ports of entry are viewed as nodes in the world system where people and commodities step up and down in value as they move across borders. To understand how this happens, this article examines, in an ethnographic fashion, the interplay of inspectors and crossing populations in United States land ports with Mexico. It focuses on the categorization of commodities as legitimate or illegitimate and the movements of people in class, nationality, and gender-differentiated roles as laborers, shoppers, tourists, managers, and smugglers. It briefly surveys the Mexican-side ports with the United States and then explores new objects of regulation and systems of surveillance, such as intellectual property and national security. The ethnography not only reveals trends in the governance of international flows, but also helps us to understand the social-political construction of value and the continuing role of borders in demarcating and enforcing global inequalities in an era supposedly marked by free trade and transnational movement. Differential access to mobility and incomplete but forceful efforts at enclosure are thus shown to be crucial to the reproduction and remaking of combined and unequal spatial (world systemic) relations.."
I have six questions you need to answer.
Q1: Is this article is about 'human migration mobility': 1 = yes; 0 = no. Answer with a number. Do not give a textual explanation.

Q2: What drivers of migration and mobility does the article study? 0 = 'other', 1 = 'climate', 2 = 'environment', 3 = 'economic', 4 = 'conflict', 5 = 'political', 6 = 'social', 7 = 'family'. Answer with a number or a sequence of numbers separated by commas. Do not give a textual explanation. 

Q3: What is the overall sentiment of the article?:0 = 'neutral', 1 = 'negative', 2 = 'positive'. Answer with a number. Do not give a textual explanation.

Q4: What type of climate or environmental keywords are explicitly mentioned?:  0 = 'none', 1 = 'algal blooms', 2 = 'infestation', 3 = 'infectious diseases', 4 = 'ocean acidification', 5 = 'sea ice', 6 = 'acid rain', 7 = 'drought', 8 = 'cold wave', 9 = 'heat wave', 10 = 'glacial', 11 = 'wildfire', 12 = 'air pollution', 13 = 'biodiversity loss', 14 = 'coastal erosion', 15 = 'land degradation', 16 = 'deforestation', 17 = 'desertification', 18 = 'water pollution', 19 = 'diebacks', 20 = 'permafrost loss', 21 = 'sand mining', 22 = 'sea level rise', 23 = 'earthquake', 24 = 'tsunami', 25 = 'volcanic', 26 = 'flood', 27 = 'avalanche', 28 = 'landslide', 29 = 'downburst', 30 = 'thunderstorm', 31 = 'sandstorm', 32 = 'haze', 33 = 'storm', 34 = 'cyclone', 35 = 'blizzard', 36 = 'hail', 37 = 'snow', 38 = 'tornado', 39 = 'wind', 40 = 'hurricane', 41 = 'typhoon', 42 = 'other'. Answer with a number or a sequence of numbers separated by commas. Do not give a textual explanation. 

Q5: What discipline does the article belong to?: 0 = 'other', 1 = 'social science', 2 = 'natural science', 3 = 'arts and humanities', 4 = 'multidiscipline and interdiscipline'. Answer with a number. Do not give a textual explanation.

Q6: Does the article apply quantitative and/or statistical analysis?: 0 = 'no', 1 = 'yes'. Answer with a number. Do not give a textual explanation.

Use the following template: 

Q1 = [];
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Q6 = [].<|eot_id|><|start_header_id|>assistant<|end_header_id|>Answer:

Ports of entry as nodes in the world system
Ports of entry are viewed as nodes in the world system where people and commodities step up and down in value as they move across borders. To understand how this happens, this article examines, in an ethnographic fashion, the interplay of inspectors and crossing populations in United States land ports with Mexico. It focuses on the categorization of commodities as legitimate or illegitimate and the movements of people in class, nationality, and gender-differentiated roles as laborers, shoppers, tourists, managers, and smugglers. It briefly surveys the Mexican-side ports with the United States and then explores new objects of regulation and systems of surveillance, such as intellectual property and national security. The ethnography not only reveals trends in the governance of international flows, but also helps us to understand the social-political construction of value and the continuing role of borders in demarcating and enforcing global inequalities in an era supposedly marked by free trade and transnational movement. Differential access to mobility and incomplete but forceful efforts at enclosure are thus shown to be crucial to the reproduction and remaking of combined and unequal spatial (world systemic) relations.