user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: What is the county, with co2 emissions of 0.407530412, and with the city Port St. Lucie? 
Knowledge Triplets: St. Lucie County, location.location.contains, 34981
St. Lucie, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, Tradition
St. Lucie County, location.statistical_region.population, m.0hjfpqd
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001701
St. Lucie County, location.location.adjoin_s, m.03jqzzb
St. Lucie County, location.statistical_region.rent50_3, m.05g9v5s
Tradition, location.location.containedby, St. Lucie County
Port St. Lucie, location.statistical_region.population, g.11x1j1bnv
34953, location.location.containedby, St. Lucie County
St. Lucie County, location.us_county.hud_county_place, St. Lucie
Port St. Lucie, location.statistical_region.population, g.11x1chm75
Port St. Lucie, location.statistical_region.population, g.11x1g42c2
Port St. Lucie, common.topic.notable_types, City/Town/Village
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001802
Port St. Lucie, location.statistical_region.population, g.12vqhv9jb
St. Lucie County, location.statistical_region.population, g.11x1k1klh
Port St. Lucie-River Park, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.statistical_region.co2_emissions_commercial, m.045jlw5
St. Lucie County, location.location.contains, Harmony Heights
St. Lucie County, location.location.contains, 34952
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002001
St. Lucie County, location.statistical_region.population, m.0hjfpnv
St. Lucie County, location.location.contains, St. Lucie County / County Place 1211199999
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001000
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001401
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002102
St. Lucie County, location.us_county.hud_county_place, St. Lucie County / County Place 1211199999
St. Lucie County, location.location.contains, 34983
Port St. Lucie, location.citytown.postal_codes, 34986
St. Lucie County, location.statistical_region.population, g.11x1hg2x6
Port St. Lucie, location.hud_foreclosure_area.bls_unemployment_rate, m.07jrpml
Port St. Lucie, location.statistical_region.population, m.0hkg4gg
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000400
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000600
Port St. Lucie, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.population, g.11x1gkzx4
St. Lucie County, location.statistical_region.population, m.0hjfpt8
St. Lucie County, location.statistical_region.population, g.11x1g4234
Fort Pierce South, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.statistical_region.population, g.12b01rtnk
Port St. Lucie, common.topic.image, Location of River Park, Florida
St. Lucie County, location.location.contains, Fort Pierce North
Port St. Lucie, location.statistical_region.population, g.11b7tf90nj
St. Lucie County, location.location.contains, Fort Pierce South
St. Lucie County, location.location.contains, Collins Park Estates
Port St. Lucie, location.statistical_region.population, g.11x1m0hwc
Port St. Lucie, location.statistical_region.population, g.11x1ksxhz
Port St. Lucie, common.topic.notable_for, g.125fp49sk
Port St. Lucie, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002005
St. Lucie County, location.statistical_region.rent50_1, m.05g9v5b
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001900
St. Lucie County, location.location.contains, Boston House
Port St. Lucie, location.statistical_region.population, g.1jmcbgvc6
St. Lucie County, location.location.contains, Fort Pierce Shores
St. Lucie County, location.statistical_region.population, g.11x1jh3f6
m.0jvvqp4, location.administrative_division_capital_relationship.administrative_division, St. Lucie County
St. Lucie County, location.location.contains, Casa Caprona
St. Lucie County, location.location.contains, 34949
St. Lucie County, location.location.contains, 34950
Port St. Lucie, location.statistical_region.population, g.1jmcbfy9y
St. Lucie County, location.statistical_region.population, g.11x1cfns5
St. Lucie County, location.location.adjoin_s, m.03jssq8
St. Lucie County, location.statistical_region.population, g.12b01zknr
St. Lucie County, location.location.contains, Carlton
St. Lucie County, location.location.contains, Glidden Park
Port St. Lucie, location.location.contains, Medvance Institute-Port Saint Lucie
St. Lucie County, location.location.contains, White City
Port St. Lucie, location.statistical_region.population, m.0k6np4k
Eldred, location.location.containedby, St. Lucie County
Port St. Lucie, location.statistical_region.population, g.11x1ggfqg
Port St. Lucie-River Park, location.hud_county_place.place, Port St. Lucie-River Park
St. Lucie County, location.statistical_region.population, m.0hjfpqm
St. Lucie County, periodicals.newspaper_circulation_area.newspapers, The Palm Beach Post
St. Lucie County, location.statistical_region.population, g.12b01nd52
Fort Pierce North, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.statistical_region.population, g.12b0208qz
Port St. Lucie, location.statistical_region.population, m.0hkg4h5
St. Lucie County, location.location.contains, Cortez Estates
Hutchinson Island South, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001601
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001402
St. Lucie County, location.statistical_region.population, m.0hjfpr1
St. Lucie County, location.us_county.hud_county_place, Lakewood Park
St. Lucie County, location.location.contains, Cana
St. Lucie County, law.court_jurisdiction_area.courts, Florida Fourth District Court of Appeal
Port St. Lucie, location.location.contains, St. Lucie County
Port St. Lucie, location.citytown.postal_codes, 34985
St. Lucie County, location.hud_foreclosure_area.bls_unemployment_rate, m.07jpttp
Port St. Lucie, location.statistical_region.population, g.11x1h8jk1
St. Lucie County, location.statistical_region.population, g.11x1g27bt
St. Lucie County, location.statistical_region.population, g.11x1jyysd
St. Lucie County, location.statistical_region.population, g.11x1hy6nw
Port St. Lucie, location.statistical_region.population, m.0hkg4g0
St. Lucie County, location.us_county.hud_county_place, White City
St. Lucie County, location.location.contains, 34946
Port St. Lucie, location.statistical_region.population, g.11x1j8qqw
St. Lucie County, location.statistical_region.population, g.11x1kkn8p
m.03jqzzb, location.adjoining_relationship.adjoins, St. Lucie County
Port St. Lucie, government.governmental_jurisdiction.governing_officials, m.0102tbd3
St. Lucie County, location.statistical_region.population, g.12b01w4xj
St. Lucie County, location.statistical_region.population, m.0hjfpry
Port St. Lucie, location.citytown.postal_codes, 34988
St. Lucie County, location.location.contains, Indrio
St. Lucie County, location.location.contains, 34945
St. Lucie County, location.statistical_region.population, m.0hjfpsm
Port St. Lucie, location.statistical_region.population, g.1jmcbfmlg
St. Lucie County, location.statistical_region.population, g.11x1f3yh_
St. Lucie County, location.statistical_region.population, g.11x1ffjn1
St. Lucie County, location.us_county.hud_county_place, Fort Pierce North
St. Lucie County, location.statistical_region.rent50_2, m.05g9v5k
St. Lucie County, location.location.containedby, Port St. Lucie, FL Metropolitan Statistical Area
St. Lucie County, location.statistical_region.population, m.0hjfpv4
St. Lucie County, location.location.contains, Moores Creek Bridge
St. Lucie County, location.us_county.hud_county_place, Port St. Lucie
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000100
St. Lucie County, location.location.contains, 34982
Port St. Lucie-River Park, location.location.containedby, United States of America
Port St. Lucie, location.statistical_region.population, g.11b66f43pm
Port St. Lucie, location.statistical_region.population, m.0hkg4gq
34987, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.co2_emissions_residential, m.045jwt6
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000901
St. Lucie County, location.statistical_region.population, m.0hjfpq4
Port St. Lucie-River Park, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000902
St. Lucie County, location.statistical_region.population, m.0hjfpph
St. Lucie County, location.location.contains, Eden
Port St. Lucie, location.statistical_region.population, m.0hkg4jr
St. Lucie County, location.statistical_region.population, g.11x1kptgw
St. Lucie County, location.location.contains, 34984
34986, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.population, g.12b021_r1
St. Lucie County, location.location.contains, St. Lucie Village Historic District
St. Lucie County, periodicals.newspaper_circulation_area.newspapers, Port St. Lucie News
St. Lucie County, location.location.contains, Eldred
St. Lucie County, location.statistical_region.population, g.11x1gc7kz
St. Lucie County, location.statistical_region.population, g.11x1cdqhs
St. Lucie County, location.statistical_region.population, g.11x1d4m3z
South Florida water management district, location.location.contains, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000700
Port St. Lucie, location.statistical_region.population, g.11x1d1w1z
St. Lucie County, location.statistical_region.population, g.11x1ljvcf
St. Lucie County, location.statistical_region.population, g.11x1cn_l7
Lakewood Park, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.statistical_region.population, m.0hjfppy
St. Lucie County, location.administrative_division.second_level_division_of, United States of America
St. Lucie County, location.statistical_region.population, g.11x1cgq1v
Port St. Lucie, location.statistical_region.population, g.11x1flk0h
St. Lucie County, location.location.contains, Fort Pierce
St. Lucie County, location.location.contains, Lakewood Park
Port St. Lucie, location.statistical_region.population, g.11x1jrg3r
St. Lucie, location.hud_county_place.place, St. Lucie
Port St. Lucie, location.statistical_region.population, m.0hkg4g7
Port St. Lucie, location.statistical_region.population, m.0hkg4hq
Port St. Lucie, location.location.containedby, Area code 772
Port St. Lucie-River Park, location.location.containedby, Florida
St. Lucie County, location.statistical_region.co2_emissions_mobile, m.045l2pz
St. Lucie County, location.statistical_region.population, m.0hjfpnm
St. Lucie County, location.statistical_region.population, g.11x1hjvf3
Port St. Lucie, location.location.contains, Port St Lucie Civic Center
St. Lucie County, location.hud_foreclosure_area.estimated_number_of_mortgages, m.07jptt0
Port St. Lucie, location.location.geolocation, m.02kh4y7
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001602
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001603
St. Lucie County, location.location.contains, g.122hp84f
St. Lucie County, location.administrative_division.capital, m.0jvvqp4
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002104
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002006
Port St. Lucie, location.statistical_region.population, m.0jtkkrg
St. Lucie County, location.statistical_region.population, g.11x1dywtj
Port St. Lucie, location.statistical_region.population, m.0hkg4ft
Port St. Lucie, location.statistical_region.population, m.0hkg4hf
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002200
St. Lucie County, common.topic.notable_for, g.1255ml24y
Port St. Lucie, common.topic.article, m.0rsbb
m.03jssq8, location.adjoining_relationship.adjoins, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001503
34984, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002003
St. Lucie County, location.location.contains, 34951
Port St. Lucie, location.statistical_region.population, g.11x1hjvnb
Port St. Lucie, location.statistical_region.population, g.11x1f8x27
Port St. Lucie, location.statistical_region.population, m.0jt6v1m
St. Lucie County, periodicals.newspaper_circulation_area.newspapers, St. Lucie News Tribune
Port St. Lucie, location.hud_county_place.place, Port St. Lucie
St. Lucie County, location.statistical_region.population, g.11x1f7285
St. Lucie County, location.statistical_region.population, m.0hjfpsd
Port St. Lucie, location.statistical_region.population, g.11x1ld9k_
St. Lucie County, location.statistical_region.population, m.0hjfpt1
Port St. Lucie, location.statistical_region.population, m.0hkg4hz
St. Lucie County, location.statistical_region.population, m.0hjfpnd
St. Lucie County, location.statistical_region.population, m.0hjfps4
Indian River Estates, location.location.containedby, St. Lucie County
St. Lucie County, location.location.time_zones, Eastern Time Zone
St. Lucie County, location.statistical_region.population, g.11x1g_rmh
St. Lucie County, location.statistical_region.population, g.11x1dst_g
Cana, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001101
St. Lucie, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.location.contains, Heathcote Botanical Gardens
Indian River Estates, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.hud_foreclosure_area.total_90_day_vacant_residential_addresses, m.07jptt7
St. Lucie County, location.statistical_region.population, m.0hjfptq
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001702
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000300
St. Lucie County, location.statistical_region.population, g.11x1m5lfv
St. Lucie County, location.statistical_region.population, m.0jsvpbn
White City, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.population, g.11x1jrgvn
St. Lucie County, location.location.contains, 34947
Ankona, location.location.containedby, St. Lucie County
St. Lucie County, common.topic.article, m.0jxjv
Port St. Lucie, FL Metropolitan Statistical Area, location.location.contains, St. Lucie County
Port St. Lucie, location.location.containedby, United States of America
Port St. Lucie, location.statistical_region.population, m.0hkg4j_
Fort Pierce South, location.location.containedby, St. Lucie County
Port St. Lucie, location.statistical_region.population, g.11x1dydkc
St. Lucie County, location.hud_foreclosure_area.estimated_number_foreclosures, m.07jptst
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000500
St. Lucie County, location.location.contains, Sunland Gardens
St. Lucie County, location.statistical_region.population, g.12vqj7mv3
St. Lucie County, common.topic.notable_types, US County
St. Lucie County, location.location.contains, Walton
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000200
St. Lucie County, location.location.contains, 34987
St. Lucie County, location.location.contains, St. Lucie County Regional History Center
St. Lucie County, location.location.contains, Waveland, Florida
Carlton, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.population, m.0hjfpp8
St. Lucie County, location.location.contains, Viking, Florida
St. Lucie County, location.location.contains, Ankona
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001102
St. Lucie County, location.us_county.county_seat, Fort Pierce
Port St. Lucie, location.citytown.postal_codes, 34953
St. Lucie County, location.statistical_region.population, g.11b66dg2yh
St. Lucie County, government.governmental_jurisdiction.government_bodies, Florida Fourth District Court of Appeal
Port St. Lucie, location.statistical_region.population, g.11x1mhpgl
Fort Pierce Shores, location.location.containedby, St. Lucie County
Indrio, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.population, g.11x1fhdhj
St. Lucie County, location.location.contains, Fort Pierce Inlet State Park
Port St. Lucie, location.citytown.postal_codes, 34987
Port St. Lucie, location.location.containedby, Florida
St. Lucie County, location.statistical_region.population, m.0k6lcfm
Cortez Estates, location.location.containedby, St. Lucie County
St. Lucie County, location.hud_foreclosure_area.total_residential_addresses, m.07jpttg
St. Lucie County, location.statistical_region.population, g.11x1lbgy7
Port St. Lucie, location.statistical_region.population, m.0hkg4gy
Port St. Lucie, location.statistical_region.population, m.0hkg4fc
m.03jr3kz, location.adjoining_relationship.adjoins, St. Lucie County
Anglevillas, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, Urca de Lima
St. Lucie County, location.location.contains, A. E. Backus Gallery & Museum
Port St. Lucie, location.statistical_region.population, m.0hkg4f4
St. Lucie County, location.location.geolocation, m.0k8n7p
St. Lucie County, location.location.contains, Hutchinson Island South
St. Lucie County, location.location.contains, St. Lucie County International Airport
St. Lucie County, location.location.contains, Port St. Lucie-River Park
Eden, location.location.containedby, St. Lucie County
St. Lucie County, location.location.containedby, Florida
St. Lucie County, location.statistical_region.population, g.12b01th5x
St. Lucie County, location.statistical_region.population, m.0jtl11l
St. Lucie County, location.statistical_region.population, m.0hjfprq
St. Lucie County, location.statistical_region.co2_emissions_industrial, m.045kjjn
St. Lucie County, location.statistical_region.population, m.0hjfpmz
St. Lucie County, location.location.contains, Queens Cove
St. Lucie County, location.location.contains, 34953
St. Lucie County, location.statistical_region.population, m.0hjfppq
Port St. Lucie, location.citytown.postal_codes, 34984
Port St. Lucie, location.statistical_region.population, g.11x1gv7_m
Port St. Lucie, FL Metropolitan Statistical Area, location.location.containedby, Florida
34983, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, Avalon State Park
St. Lucie County, location.statistical_region.population, g.11x1h07xs
St. Lucie County, location.statistical_region.population, g.11x1mnqt4
St. Lucie County, location.us_county.hud_county_place, Port St. Lucie-River Park
St. Lucie County, location.location.contains, River Park
Port St. Lucie, location.statistical_region.population, m.0hkg4dy
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002002
Port St. Lucie, location.statistical_region.population, m.0hkg4j6
Port St. Lucie, location.citytown.postal_codes, 34952
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001300
34952, location.location.containedby, St. Lucie County
River Park, location.location.containedby, St. Lucie County
m.0cp_5qs, common.webpage.topic, Medvance Institute-Port Saint Lucie
Port St. Lucie, location.statistical_region.population, g.11x1d0wvs
St. Lucie County, location.statistical_region.population, g.12b023qrg
St. Lucie Village Historic District, location.location.containedby, St. Lucie County
Port St. Lucie, location.hud_foreclosure_area.ofheo_price_change, m.07jrpms
St. Lucie County, location.statistical_region.population, m.0hjfpty
St. Lucie County, location.location.containedby, South Florida water management district
Port St. Lucie, location.statistical_region.population, g.1jmcbf98_
St. Lucie County, location.statistical_region.population, g.12b01zknq
St. Lucie County, location.location.contains, US Census 2000 Tract 12111002105
Port St. Lucie, location.statistical_region.population, m.0hkg4fl
Urca de Lima, location.location.containedby, St. Lucie County
St. Lucie County, location.statistical_region.rent50_0, m.05g9v53
Area code 772, location.location.contains, Port St. Lucie
m.0102tbd3, government.government_position_held.jurisdiction_of_office, Port St. Lucie
St. Lucie County, location.statistical_region.rent50_4, m.05g9v5_
St. Lucie County, location.hud_foreclosure_area.hhuniv, m.07jptsl
St. Lucie County, location.statistical_region.population, g.11x1k1klj
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001502
Fort Pierce North, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001801
St. Lucie County, location.location.contains, Sunrise Theatre
Medvance Institute-Port Saint Lucie, location.location.containedby, Florida
St. Lucie County, location.statistical_region.population, g.12b021_r2
St. Lucie County, location.us_county.hud_county_place, Indian River Estates
St. Lucie County, location.location.contains, Port St. Lucie
St. Lucie County, location.statistical_region.population, m.0hjfpqv
St. Lucie County, location.statistical_region.population, m.0hjfpr8
St. Lucie County, location.location.contains, US Census 2000 Tract 12111000800
St. Lucie County, location.location.contains, Indian River Estates
St. Lucie County, location.statistical_region.population, m.0hjfpn5
Port St. Lucie News, book.newspaper.circulation_areas, St. Lucie County
St. Lucie County, location.us_county.hud_county_place, Fort Pierce
St. Lucie County, location.location.contains, 34986
St. Lucie County, location.statistical_region.population, m.0hjfpp1
St. Lucie County, location.location.contains, Captain Hammond House
St. Lucie County, location.location.contains, US Census 2000 Tract 12111001200
St. Lucie County, location.statistical_region.population, m.0hjfprh
Port St. Lucie, location.statistical_region.population, g.11b7tnnw1x
St. Lucie County, location.location.adjoin_s, m.03jr3kz
St. Lucie County, location.statistical_region.population, g.11x1dmb2r
St. Lucie County, location.hud_foreclosure_area.ofheo_price_change, m.07jpttw
White City, location.hud_county_place.county, St. Lucie County
Fort Pierce, location.hud_county_place.county, St. Lucie County
St. Lucie County, location.location.contains, Paradise Park
St. Lucie County, location.statistical_region.population, m.0hjfpth
Port St. Lucie, location.statistical_region.population, g.11x1fllwg
Walton, location.location.containedby, St. Lucie County
St. Lucie County, location.us_county.hud_section_8_area, Port St. Lucie, FL MSA HUD Section 8 Area
St. Lucie County, location.us_county.hud_county_place, Hutchinson Island South
St. Lucie County, location.statistical_region.co2_emissions_total, m.045hszs
St. Lucie County, location.statistical_region.population, m.0hjfpsv
Port St. Lucie, location.statistical_region.population, m.0hkg4jg
St. Lucie County, location.location.contains, Savannas Preserve State Park
Port St. Lucie, location.statistical_region.population, g.11x1k8g_7
St. Lucie County, location.us_county.hud_county_place, Fort Pierce South
St. Lucie County, location.location.contains, St. Lucie
Port St. Lucie, location.statistical_region.population, m.0hkg4k6
Port St. Lucie, location.statistical_region.population, g.11x1lv159
Port St. Lucie, location.citytown.postal_codes, 34983
Port St. Lucie News, common.topic.notable_for, g.125dx8c90
Hutchinson Island South, location.location.containedby, St. Lucie County
St. Lucie County, location.location.contains, Anglevillas

Answer: St. Lucie County