what is the number of japanese in the top 10?
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col : rank | athlete | nationality | time | notes row 1 :  | valeriy borchin | russia | 1:19:56 |  row 2 :  | vladimir kanaykin | russia | 1:20:27 |  row 3 :  | luis fernando lópez | colombia | 1:20:38 | sb row 4 : 4 | wang zhen | china | 1:20:54 |  row 5 : 5 | stanislav emelyanov | russia | 1:21:11 |  row 6 : 6 | kim hyun-sub | south korea | 1:21:17 |  row 7 : 7 | ruslan dmytrenko | ukraine | 1:21:31 | sb row 8 : 8 | yusuke suzuki | japan | 1:21:39 |  row 9 : 9 | alex schwazer | italy | 1:21:50 | sb row 10 : 10 | erick barrondo | guatemala | 1:22:08 |  row 11 : 11 | chu yafei | china | 1:22:10 |  row 12 : 12 | sergey morozov | russia | 1:22:37 |  row 13 : 13 | wang hao | china | 1:22:49 |  row 14 : 14 | matej tóth | slovakia | 1:22:55 |  row 15 : 15 | eder sánchez | mexico | 1:23:05 |  row 16 : 16 | joão vieira | portugal | 1:23:26 |  row 17 : 17 | miguel ángel lópez | spain | 1:23:41 |  row 18 : 18 | anton kucmin | slovakia | 1:23:57 |  row 19 : 19 | james rendón | colombia | 1:24:08 | sb row 20 : 20 | horacio nava | mexico | 1:24:15 |  row 21 : 21 | christopher linke | germany | 1:24:17 |  row 22 : 22 | caio bonfim | brazil | 1:24:29 |  row 23 : 23 | trevor barron | united states | 1:24:33 |  row 24 : 24 | rafał augustyn | poland | 1:24:47 |  row 25 : 25 | byun youngjun | south korea | 1:24:48 |  row 26 : 26 | hassanine sebei | tunisia | 1:25:17 |  row 27 : 27 | jared tallent | australia | 1:25:25 |  row 28 : 28 | recep çelik | turkey | 1:25:39 |  row 29 : 29 | nazar kovalenko | ukraine | 1:25:50 |  row 30 : 30 | gurmeet singh | india | 1:26:34 |  row 31 : 31 | babubhai panucha | india | 1:26:53 |  row 32 : 32 | david kimutai | kenya | 1:27:20 | sb row 33 : 33 | yerko araya | chile | 1:27:47 |  row 34 : 34 | hédi teraoui | tunisia | 1:29:48 |  row 35 : 35 | diego flores | mexico | 1:30:00 |  row 36 : 36 | juan manuel cano | argentina | 1:30:00 |  row 37 : 37 | emerson hernandez | el salvador | 1:30:48 | sb row 38 : 38 | ronald quispe | bolivia | 1:32:09 | pb row 39 :  | moacir zimmermann | brazil | dsq |  row 40 :  | gustavo restrepo | colombia | dsq |  row 41 :  | giorgio rubino | italy | dsq |  row 42 :  | anatole ibañez | sweden | dsq |  row 43 :  | adam rutter | australia | dnf |  row 44 :  | mauricio arteaga | ecuador | dnf |  row 45 :  | paquillo fernández | spain | dnf |  row 46 :  | park chil-sung | south korea | dnf |
what is the number of japanese in the top 10?
Rank Athlete Nationality Time Notes
Valeriy Borchin Russia 1:19:56
Vladimir Kanaykin Russia 1:20:27
Luis Fernando López Colombia 1:20:38 SB
4 Wang Zhen China 1:20:54
5 Stanislav Emelyanov Russia 1:21:11
6 Kim Hyun-sub South Korea 1:21:17
7 Ruslan Dmytrenko Ukraine 1:21:31 SB
8 Yusuke Suzuki Japan 1:21:39
9 Alex Schwazer Italy 1:21:50 SB
10 Erick Barrondo Guatemala 1:22:08
11 Chu Yafei China 1:22:10
12 Sergey Morozov Russia 1:22:37
13 Wang Hao China 1:22:49
14 Matej Tóth Slovakia 1:22:55
15 Eder Sánchez Mexico 1:23:05
16 João Vieira Portugal 1:23:26
17 Miguel Ángel López Spain 1:23:41
18 Anton Kucmin Slovakia 1:23:57
19 James Rendón Colombia 1:24:08 SB
20 Horacio Nava Mexico 1:24:15
21 Christopher Linke Germany 1:24:17
22 Caio Bonfim Brazil 1:24:29
23 Trevor Barron United States 1:24:33
24 Rafał Augustyn Poland 1:24:47
25 Byun Youngjun South Korea 1:24:48
26 Hassanine Sebei Tunisia 1:25:17
27 Jared Tallent Australia 1:25:25
28 Recep Çelik Turkey 1:25:39
29 Nazar Kovalenko Ukraine 1:25:50
30 Gurmeet Singh India 1:26:34
31 Babubhai Panucha India 1:26:53
32 David Kimutai Kenya 1:27:20 SB
33 Yerko Araya Chile 1:27:47
34 Hédi Teraoui Tunisia 1:29:48
35 Diego Flores Mexico 1:30:00
36 Juan Manuel Cano Argentina 1:30:00
37 Emerson Hernandez El Salvador 1:30:48 SB
38 Ronald Quispe Bolivia 1:32:09 PB
Moacir Zimmermann Brazil DSQ
Gustavo Restrepo Colombia DSQ
Giorgio Rubino Italy DSQ
Anatole Ibañez Sweden DSQ
Adam Rutter Australia DNF
Mauricio Arteaga Ecuador DNF
Paquillo Fernández Spain DNF
Park Chil-sung South Korea DNF
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