Table:
text: Athletics at the 1956 Summer Olympics – Men's long jump
Final Round
Final Round
Athlete_Name Jump_1 Jump_2 Jump_3 Best_Jump
Ken Wilmshurst ( GBR ) 7.14 7.06 7.05 7.14 m
Fermín Donazar ( URU ) X X 6.57 6.57 m
Igor Ter-Ovanesian ( URS ) X X X No Mark

text: Athletics at the 1956 Summer Olympics – Men's long jump
Final Round
Final Round
Athlete_Name Jump_1 Jump_2 Jump_3 Best_Jump
Gregory Bell ( USA ) 6.98 7.83 7.77 7.83 m
John Bennett ( USA ) 7.68 7.61 X 7.68 m
Jorma Valkama ( FIN ) 7.11 X 7.48 7.48 m
Dmitriy Bondarenko ( URS ) 7.44 X 7.13 7.44 m
Karim Olowu ( NGR ) 7.28 6.77 7.36 7.36 m
Kazimierz Kropidlowski ( POL ) 7.27 6.92 7.30 7.30 m
Neville Price ( RSA ) X 7.28 X 7.28 m
Oleg Fyodoseyev ( URS ) X 7.25 7.27 7.27 m
Arthur Gruttenden ( GBR ) 7.15 X 6.96 7.15 m
Henryk Grabowski ( POL ) X X 7.15 7.15 m

Question: Who has an x under vault 1, vault 2 of 7.28 and what is this person's best vault among track and field athletes at the 1956 Summer Olympics - men's long jump?