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: name the ski run which is served by supreme.? 
Knowledge Triplets: Supreme, skiing.ski_run.served_by, White Squaw Area
No. 9 Express, skiing.ski_run.rating, Advanced
Alta Ski Area, skiing.ski_area.lifts, Supreme
Wildcat, skiing.ski_lift.ski_area, Alta Ski Area
Little Cottonwood Canyon, location.location.contains, Alta Ski Area
Supreme, skiing.ski_lift.runs_served, Big Dipper
Supreme, skiing.ski_lift.runs_served, Rock N' Roll
Supreme, skiing.ski_lift.runs_served, Back Forty
Intermediate, skiing.run_rating.ski_runs, Rock N' Roll
Vicky's, skiing.ski_run.rating, Advanced
Last Chance, skiing.ski_run.rating, Advanced
Supreme, skiing.ski_lift.runs_served, Sleepy Hollow
White Squaw Area, skiing.ski_run.served_by, Supreme
Rock N' Roll, skiing.ski_run.rating, Intermediate
Advanced, skiing.run_rating.ski_runs, No. 9 Express
Piney Glade, skiing.ski_run.served_by, Supreme
Snowshoe Hill, skiing.ski_run.rating, Advanced
m.04kk2v9, skiing.lift_tenure.capacity, 2
Supreme, skiing.ski_run.served_by, Erosion Gullies
Advanced, skiing.run_rating.ski_runs, Sidewinder
East Castle Area, skiing.ski_run.served_by, Supreme
Advanced, skiing.run_rating.ski_runs, Castle Apron
Advanced, skiing.run_rating.ski_runs, Back Forty
Collins, skiing.ski_lift.ski_area, Alta Ski Area
East Castle Area, skiing.ski_run.rating, Advanced
Alta Ski Area, skiing.ski_area.lodges, Alta Peruvian Lodge
Supreme, skiing.ski_lift.runs_served, Sidewinder
Supreme, skiing.ski_lift.runs_served, Vicky's
m.04kk2v2, skiing.lift_tenure.capacity, 3
Advanced, skiing.run_rating.ski_runs, Upper Sleepy Hollow
Intermediate, skiing.run_rating.ski_runs, Sleepy Hollow
m.04kk2v2, skiing.lift_tenure.date_built, 2001
Back Forty, skiing.ski_run.rating, Advanced
Supreme, skiing.ski_lift.runs_served, Snowshoe Hill
Supreme, skiing.ski_lift.runs_served, Castle Apron
Alta Ski Area, skiing.ski_area.lifts, Wildcat
Alf's Restaurant, skiing.ski_lodge.ski_area, Alta Ski Area
Alta Ski Area, skiing.ski_area.top_elevation, 3216.0
3 Bears, skiing.ski_run.served_by, Supreme
Supreme, skiing.ski_lift.runs_served, Sunset
Supreme, skiing.ski_run.served_by, Castle Apron
Upper Big Dipper, skiing.ski_run.served_by, Supreme
Supreme, skiing.ski_lift.runs_served, Upper Big Dipper
Sleepy Hollow, skiing.ski_run.served_by, Supreme
Advanced, skiing.run_rating.ski_runs, So Long
No. 9 Express, skiing.ski_run.served_by, Supreme
Sunnyside, skiing.ski_lift.ski_area, Alta Ski Area
Supreme, skiing.ski_lift.runs_served, East Castle Area
Alta Ski Area, skiing.ski_area.closest_city, Salt Lake City
Supreme, skiing.ski_lift.runs_served, Piney Glade
Vicky's, skiing.ski_run.served_by, Supreme
Erosion Gullies, skiing.ski_run.rating, Advanced
Supreme, skiing.ski_lift.ski_area, Alta Ski Area
Supreme, skiing.ski_run.served_by, So Long
Supreme, skiing.ski_lift.runs_served, Upper Sleepy Hollow
Intermediate, skiing.run_rating.ski_runs, Big Dipper
Supreme, skiing.ski_run.served_by, Back Forty
Intermediate, skiing.run_rating.ski_runs, 3 Bears
Wasatch-Cache National Forest, location.location.contains, Alta Ski Area
Advanced, skiing.run_rating.ski_runs, Spiney Chutes Area
Cecret, skiing.ski_lift.ski_area, Alta Ski Area
Alta Ski Area, skiing.ski_area.base_elevation, 2600.0
Alta Ski Area, skiing.ski_area.lifts, Cecret
Supreme, skiing.ski_lift.runs_served, So Long
Supreme, skiing.ski_lift.runs_served, White Squaw Area
Supreme, skiing.ski_lift.lift_type, m.04kk2v9
So Long, skiing.ski_run.rating, Advanced
Alta Ski Area, location.location.containedby, Wasatch-Cache National Forest
Alta Ski Area, skiing.ski_area.lodges, Goldminer's Daughter Lodge
Intermediate, skiing.run_rating.ski_runs, Upper Big Dipper
Castle Apron, skiing.ski_run.served_by, Supreme
Goldminer's Daughter Lodge, skiing.ski_lodge.ski_area, Alta Ski Area
Alta Ski Area, location.location.geolocation, m.051r4tb
Alta Ski Area, skiing.ski_area.skiable_area, 8.9
Advanced, skiing.run_rating.ski_runs, Hammer Head
Supreme, skiing.ski_lift.runs_served, No. 9 Express
Supreme, skiing.ski_lift.lift_type, m.04kk2v2
Challenger, skiing.ski_run.rating, Advanced
Alta, location.location.contains, Alta Ski Area
Advanced, skiing.run_rating.ski_runs, Last Chance
Spiney Chutes Area, skiing.ski_run.served_by, Supreme
Supreme, skiing.ski_lift.runs_served, 3 Bears
Advanced, skiing.run_rating.ski_runs, Challenger
Supreme, skiing.ski_run.served_by, Big Dipper
Advanced, skiing.run_rating.ski_runs, Erosion Gullies
m.04kk2v2, skiing.lift_tenure.ski_lift, Supreme
Supreme, skiing.ski_lift.runs_served, Erosion Gullies
Albion, skiing.ski_lift.ski_area, Alta Ski Area
Erosion Gullies, skiing.ski_run.served_by, Supreme
Upper Sleepy Hollow, skiing.ski_run.served_by, Supreme
Rustler Lodge, skiing.ski_lodge.ski_area, Alta Ski Area
Advanced, skiing.run_rating.ski_runs, Supreme Challenge
Supreme, skiing.ski_lift.runs_served, Last Chance
Advanced, skiing.run_rating.ski_runs, Sunset
Piney Glade, skiing.ski_run.rating, Advanced
Albion Day Lodge, skiing.ski_lodge.ski_area, Alta Ski Area
Sugarloaf, skiing.ski_lift.ski_area, Alta Ski Area
Alta Ski Area, skiing.ski_area.lodges, Alta Lodge
Alta Ski Area, skiing.ski_area.snowfall, m.04kk25s
m.04kk2v9, skiing.lift_tenure.date_removed, 2001
Back Forty, skiing.ski_run.served_by, Supreme
Supreme, skiing.ski_run.served_by, Rock N' Roll
Alta Ski Area, skiing.ski_area.lodges, Alf's Restaurant
Fixed grip chairlift, skiing.lift_type.ski_lifts, m.04kk2v2
Advanced, skiing.run_rating.ski_runs, Vicky's
Sunset, skiing.ski_run.rating, Advanced
Hammer Head, skiing.ski_run.served_by, Supreme
Hammer Head, skiing.ski_run.rating, Advanced
Advanced, skiing.run_rating.ski_runs, Snowshoe Hill
Supreme, skiing.ski_run.served_by, Vicky's
Sleepy Hollow, skiing.ski_run.rating, Intermediate
Upper Big Dipper, skiing.ski_run.rating, Intermediate
Upper Sleepy Hollow, skiing.ski_run.rating, Advanced
Rock N' Roll, skiing.ski_run.served_by, Supreme
Supreme, skiing.ski_lift.runs_served, Hammer Head
Alta Ski Area, location.location.containedby, Little Cottonwood Canyon
Spiney Chutes Area, skiing.ski_run.rating, Advanced
Challenger, skiing.ski_run.served_by, Supreme
Snowshoe Hill, skiing.ski_run.served_by, Supreme
Alta Ski Area, skiing.ski_area.lodges, Albion Day Lodge
So Long, skiing.ski_run.served_by, Supreme
Alta Ski Area, location.location.containedby, Alta
Supreme, skiing.ski_run.served_by, Supreme Challenge
m.04kk2v9, skiing.lift_tenure.lift_type, Fixed grip chairlift
Alta Ski Area, skiing.ski_area.snowfall, m.0ggj5l_
Advanced, skiing.run_rating.ski_runs, East Castle Area
Advanced, skiing.run_rating.ski_runs, Piney Glade
Supreme, skiing.ski_run.served_by, Snowshoe Hill
Sidewinder, skiing.ski_run.rating, Advanced
Sunset, skiing.ski_run.served_by, Supreme
Sidewinder, skiing.ski_run.served_by, Supreme
Supreme, skiing.ski_lift.runs_served, Supreme Challenge
Alta Ski Area, skiing.ski_area.lodges, Rustler Lodge
m.04kk2v9, skiing.lift_tenure.ski_lift, Supreme
Supreme Challenge, skiing.ski_run.served_by, Supreme
Alta Ski Area, skiing.ski_area.lifts, Collins
Watson Shelter, skiing.ski_lodge.ski_area, Alta Ski Area
Big Dipper, skiing.ski_run.rating, Intermediate
Last Chance, skiing.ski_run.served_by, Supreme
Alta Lodge, skiing.ski_lodge.ski_area, Alta Ski Area
Supreme, skiing.ski_run.served_by, Hammer Head
m.04kk2v2, skiing.lift_tenure.lift_type, Fixed grip chairlift
Fixed grip chairlift, skiing.lift_type.ski_lifts, m.04kk2v9
Big Dipper, skiing.ski_run.served_by, Supreme
Castle Apron, skiing.ski_run.rating, Advanced
Alta Ski Area, skiing.ski_area.opening_date, 1939-01-15
Snowpine Lodge, skiing.ski_lodge.ski_area, Alta Ski Area
Supreme Challenge, skiing.ski_run.rating, Advanced
Supreme, skiing.ski_lift.runs_served, Spiney Chutes Area
Alta Ski Area, skiing.ski_area.lifts, Sunnyside
Alta Ski Area, skiing.ski_area.lifts, Albion
Supreme, skiing.ski_lift.runs_served, Challenger
Alta Peruvian Lodge, skiing.ski_lodge.ski_area, Alta Ski Area
Alta Ski Area, skiing.ski_area.lodges, Snowpine Lodge
White Squaw Area, skiing.ski_run.rating, Advanced
Alta Ski Area, skiing.ski_area.lodges, Watson Shelter
3 Bears, skiing.ski_run.rating, Intermediate
Alta Ski Area, skiing.ski_area.lifts, Sugarloaf
Advanced, skiing.run_rating.ski_runs, White Squaw Area

Answer: White Squaw Area
Hammer Head
3 Bears
Upper Sleepy Hollow
No. 9 Express
Rock N' Roll
Big Dipper
Sleepy Hollow
Upper Big Dipper
Sidewinder
Back Forty
Piney Glade
Supreme Challenge
So Long
Erosion Gullies
Snowshoe Hill
Castle Apron
Spiney Chutes Area
Challenger
Sunset
Last Chance
East Castle Area
Vicky's