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 was Jason Priestly's last season on Beverly Hills 90210? 
Knowledge Triplets: m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 2
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tf6
Beverly Hills, 90210 - Season 6, tv.tv_series_season.series, Beverly Hills, 90210
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0k94myw
m.0220tf6, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
m.0220tf6, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0wyc5nx
m.02t8d0c, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 2
Beverly Hills, 90210 - Season 4, tv.tv_series_season.episodes, And Did It...My Way
m.0wyb_dp, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.02t8d0c
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tfg
Beverly Hills, 90210 - Season 4, tv.tv_series_season.series, Beverly Hills, 90210
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.02t8mh8
m.0220tg2, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tc8
m.0220tg2, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 2
m.02t94lh, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.0220tgk
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tgk
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.02t94lh
m.09w0rlt, common.webpage.resource, '90210' Exclusive: Jason Priestley's Back...and He's Not Alone!
Beverly Hills, 90210 - Season 8, tv.tv_series_season.series, Beverly Hills, 90210
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 2
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.0220tf6
Beverly Hills, 90210 - Season 7, tv.tv_series_season.episodes, If I Had a Hammer
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.0220tfq
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 10
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 4, tv.tv_series_season.episodes, The Time Has Come Today
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0wyb_33
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.02t926d
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0220tc8
m.0220tdl, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.02t926d
'90210' Exclusive: Jason Priestley's Back...and He's Not Alone!, common.resource.annotations, m.09w0rlt
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tf6
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tf6
Beverly Hills, 90210 - Season 6, tv.tv_series_season.episodes, Angels We Have Heard on High
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
Jason Priestley, tv.tv_director.episodes_directed, Jobbed
m.02t94lh, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0220tfq
m.02t926d, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.04fgn00
m.02t8d0c, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 3
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0wyb_dp
m.0wybz18, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tdl
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.02t94lh
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.02t94lh
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0220tdz
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 9
m.02t8d0c, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
Beverly Hills, 90210 - Season 6, tv.tv_series_season.episodes, Fade In, Fade Out
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.0220tdz
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tc8
m.0220tdl, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.02t8d0c
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 3
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
Beverly Hills, 90210 - Season 10, tv.tv_series_season.series, Beverly Hills, 90210
Jobbed, tv.tv_series_season.episodes, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0220tdz
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0220tfq
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 4
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0220tfq
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wybz18
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 0
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0k94myw
Jason Priestley, tv.tv_actor.starring_roles, m.0220tdz
m.02t94lh, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wybzrz
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 10
m.098dqpt, common.webpage.resource, Why ''90210'''s Jason Priestly apologizes to the fans
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.0220tgk
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 10
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0220tdl
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.02t8pzz
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tdl
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0220tgk
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0wybzrz
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 3
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.0220tfq
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 7, tv.tv_series_season.episodes, Graduation Day (1)
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tdz
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0k94myw
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.02t926d
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0220tf6
Beverly Hills, 90210 - Season 6, tv.tv_series_season.episodes, Bleeding Hearts
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 3, tv.tv_series_season.episodes, She Came in Through the Bathroom Window
Beverly Hills, 90210 - Season 9, tv.tv_series_season.series, Beverly Hills, 90210
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wyb_33
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 7
m.02t8d0c, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.02t94lh
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tfg
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.02t8d0c
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.02t926d
m.0220tf6, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0k94mzp
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 3
Jason Priestley, tv.tv_director.episodes_directed, Graduation Day (2)
m.0220tg2, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 2
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.0220tdl
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tfq
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.04fgn00
m.0k94myp, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wyc6zz
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tgk
Beverly Hills, 90210 - Season 1, tv.tv_series_season.regular_cast, m.02t8mh8
m.0220tfq, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.02t94lh
m.0k94myp, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tc8
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0k94mzp
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.04fgn00
Beverly Hills 90210, tv.tv_theme_song.theme_song_for, Beverly Hills, 90210
Beverly Hills, 90210 - Season 1, tv.tv_series_season.regular_cast, m.0220tc8
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 3
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tg2
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0220tf6
Graduation Day (2), tv.tv_series_season.episodes, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tg2
Beverly Hills, 90210 - Season 5, tv.tv_series_season.episodes, Sweating It Out
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0220tc8
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0wybz18
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.0220tf6
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 3
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.0220tc8
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tfq
If I Had a Hammer, tv.tv_series_season.episodes, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 6, tv.tv_series_season.regular_cast, m.0220tc8
m.0k94myw, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210, tv.tv_series_season.series, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0k94myp
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 1
Beverly Hills, 90210 - Season 7, tv.tv_series_season.regular_cast, m.0220tdz
m.0220tf6, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0220tc8
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.04fgn00
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.02t8d0c
m.02t8pzz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tc8
Graduation Day (1), tv.tv_series_season.episodes, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tfq
Beverly Hills, 90210 - Season 2, tv.tv_series_season.series, Beverly Hills, 90210
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0220tdl
With This Ring, tv.tv_series_season.episodes, Beverly Hills, 90210 - Season 7
m.02t94lh, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0220tf6
Beverly Hills, 90210 - Season 7, tv.tv_series_season.series, Beverly Hills, 90210
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tdz
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tdl
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0220tgk
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 10
Jason Priestley, tv.tv_director.episodes_directed, With This Ring
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.02t8mh8
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tfq
Beverly Hills, 90210 - Season 1, tv.tv_series_season.regular_cast, m.0220tg2
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
Beverly Hills, 90210 - Season 5, tv.tv_series_season.episodes, Things That Go Bang in the Night
Jason Priestley, tv.tv_director.episodes_directed, Graduation Day (1)
m.0220tc8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tf6
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tg2
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wyb_dp
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
m.02t926d, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 4
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0k94myp
m.02t8mh8, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 5
Beverly Hills, 90210 - Season 5, tv.tv_series_season.series, Beverly Hills, 90210
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tgk
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 6
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wyc1rh
Beverly Hills, 90210 - Season 7, tv.tv_series_season.episodes, Jobbed
m.0220tgk, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
Why ''90210'''s Jason Priestly apologizes to the fans, common.resource.annotations, m.098dqpt
m.02t926d, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 6
Jason Priestley, tv.tv_director.episodes_directed, If I Had a Hammer
Beverly Hills, 90210 - Season 7, tv.tv_series_season.episodes, With This Ring
Beverly Hills, 90210 - Season 5, tv.tv_series_season.regular_cast, m.0220tdl
m.0220tdz, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 9
m.0k94myw, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 2
Beverly Hills, 90210 - Season 8, tv.tv_series_season.regular_cast, m.0k94myp
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0k94m_1
m.0220tfq, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210 - Season 6, tv.tv_series_season.episodes, Must Be a Guy Thing
m.0220tg2, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 3
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tgk
Beverly Hills, 90210 - Season 3, tv.tv_series_season.regular_cast, m.0220tg2
Beverly Hills, 90210 - Season 2, tv.tv_series_season.regular_cast, m.0220tdz
m.02t94lh, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
m.0220tdz, tv.tv_series_season.regular_cast, Beverly Hills, 90210 - Season 7
Beverly Hills, 90210, tv.tv_program.seasons, Beverly Hills, 90210 - Season 5
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0k94m_1
m.02t926d, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 7
m.0220tfq, tv.regular_tv_appearance.seasons, Beverly Hills, 90210 - Season 8
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tfg
Beverly Hills, 90210 - Season 4, tv.tv_series_season.regular_cast, m.0220tdz
Beverly Hills, 90210 - Season 10, tv.tv_series_season.regular_cast, m.0wyc5nx
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0wyc1rh
Beverly Hills, 90210 - Season 7, tv.tv_series_season.episodes, Graduation Day (2)
Beverly Hills, 90210 - Season 9, tv.tv_series_season.regular_cast, m.0220tgk
Beverly Hills, 90210 - Season 3, tv.tv_series_season.series, Beverly Hills, 90210

Answer: Beverly Hills, 90210 - Season 7