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 asteroid is part of pallas family? 
Knowledge Triplets: 2 Pallas, astronomy.star_system_body.star_system, Solar System
5222 Ioffe, astronomy.asteroid.member_of_asteroid_group, Asteroid belt
please change Pallas family type from asteroid group to family, community.discussion_thread.post, m.0cyjp2p
Athena Alea, symbols.name_source.namesakes, 2 Pallas
Palladium, symbols.namesake.named_after, 2 Pallas
5222 Ioffe, astronomy.orbital_relationship.orbits, Sun
Pallas family, astronomy.asteroid_family.asteroid_family_member, 5222 Ioffe
m.0thcf7m, dataworld.gardening_hint.last_referenced_by, 5222 Ioffe
5222 Ioffe, astronomy.celestial_object.category, Asteroid
Asteroid, astronomy.celestial_object_category.objects, 5222 Ioffe
Small Solar System body, astronomy.celestial_object_category.objects, 5222 Ioffe
Pallas family, astronomy.asteroid.member_of_asteroid_family, 2 Pallas
please change Pallas family type from asteroid group to family, community.discussion_thread.post, m.0cywvzk
2 Pallas, astronomy.orbital_relationship.periapsis, 319005000.0
2 Pallas, base.schemastaging.star_system_body_extra.mass, 3.53e-05
Sun, astronomy.orbital_relationship.orbited_by, 5222 Ioffe
Sun, astronomy.orbital_relationship.orbited_by, 2 Pallas
5222 Ioffe, astronomy.astronomical_discovery.discovery_site, Crimean Astrophysical Observatory
5222 Ioffe, astronomy.star_system_body.absolute_magnitude, 11.0
5222 Ioffe, astronomy.star_system_body.star_system, Solar System
B-type asteroid, astronomy.asteroid_spectral_type.asteroids_of_this_type, 2 Pallas
2 Pallas, astronomy.orbital_relationship.mean_orbital_speed, 17.65
2 Pallas, astronomy.astronomical_discovery.discoverer, Heinrich Wilhelm Matthias Olbers
m.0r054zr, dataworld.gardening_hint.last_referenced_by, 2 Pallas
5222 Ioffe, astronomy.celestial_object.category, Small Solar System body
2 Pallas, astronomy.astronomical_discovery.discovery_date, 1802-03-28
2 Pallas, astronomy.celestial_object.category, Asteroid
2 Pallas, astronomy.star_system_body.absolute_magnitude, 4.13
Pallas family, astronomy.asteroid.member_of_asteroid_family, 5222 Ioffe
5222 Ioffe, astronomy.astronomical_discovery.discoverer, Nikolai Chernykh
5222 Ioffe, astronomy.astronomical_discovery.discovery_date, 1980-10-11
Pallas (Asteroid), base.skosbase.skos_concept.equivalent_topic, 2 Pallas
2 Pallas, astronomy.asteroid.spectral_type, B-type asteroid
2 Pallas, astronomy.orbital_relationship.orbit_eccentricity, 0.231
please change Pallas family type from asteroid group to family, community.discussion_thread.topic, Pallas family
5222 Ioffe, astronomy.orbital_relationship.inclination, 34.576
2 Pallas, symbols.name_source.namesakes, Palladium
2 Pallas, astronomy.orbital_relationship.semi_major_axis, 414737000.0
Crimean Astrophysical Observatory, astronomy.astronomical_observatory.discoveries, 5222 Ioffe
2 Pallas, astronomy.asteroid.member_of_asteroid_family, Pallas family
Pallas family, astronomy.asteroid_family.founding_asteroid_family_member, 2 Pallas
2 Pallas, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0099-e427
2 Pallas, astronomy.orbital_relationship.orbital_period, 1686.044
Small Solar System body, astronomy.celestial_object_category.objects, 2 Pallas
5222 Ioffe, astronomy.asteroid.member_of_asteroid_family, Pallas family
2 Pallas, astronomy.asteroid.member_of_asteroid_group, Asteroid belt
pallas.noun.02, base.wordnet.synset.equivalent_topic, 2 Pallas
Asteroid belt, astronomy.asteroid_group.asteroid_group_members, 5222 Ioffe
2 Pallas, astronomy.orbital_relationship.inclination, 34.84
5222 Ioffe, astronomy.orbital_relationship.orbit_eccentricity, 0.1453
2 Pallas, symbols.namesake.named_after, Athena Alea
2 Pallas, astronomy.orbital_relationship.aoapsis, 510468000.0
please change Pallas family type from asteroid group to family, community.discussion_thread.post, m.0cyqyt_
Solar System, astronomy.star_system.planetary_system, 5222 Ioffe
Asteroid, astronomy.celestial_object_category.objects, 2 Pallas
2 Pallas, astronomy.orbital_relationship.orbits, Sun
please change Pallas family type from asteroid group to family, community.discussion_thread.topic, Astronomy
Pallas family, astronomy.asteroid_family.asteroid_family_member, 2 Pallas
Nikolai Chernykh, astronomy.astronomer.astronomical_objects_discovered, 5222 Ioffe
2 Pallas, astronomy.celestial_object.category, Small Solar System body
Heinrich Wilhelm Matthias Olbers, astronomy.astronomer.astronomical_objects_discovered, 2 Pallas
2 Pallas, base.skosbase.vocabulary_equivalent_topic.equivalent_concept, Pallas (Asteroid)
Solar System, astronomy.star_system.planetary_system, 2 Pallas
Asteroid belt, astronomy.asteroid_group.asteroid_group_members, 2 Pallas
5222 Ioffe, base.schemastaging.star_system_body_extra.solar_day, 0.808

Answer: 5222 Ioffe
2 Pallas