Table:
text: Kuniyoshi Hironaka
Mixed martial arts record
Mixed martial arts record
Res_ Record Opponent Method_ Event Round Location_
Win 6-1 Mark Moreno Submission (neck crank) SB 29 - SuperBrawl 29 1 Hawaii , United States
Win 5-1 Nick Diaz Decision (split) Shooto - 2002 Year-End Show 3 Tokyo , Japan
Win 4-1 Yasuyuki Tokuoka Decision (unanimous) Shooto - Treasure Hunt 11 2 Tokyo , Japan
Win 3-1 Yuji Kusu TKO (swollen eye) Shooto - GIG East 10 2 Tokyo , Japan
Loss 2-1 Hirofumi Hara TKO (punches) Shooto - GIG East 9 1 Tokyo , Japan
Win 2-0 Toru Nakayama Submission (triangle choke) Shooto - Treasure Hunt 4 1 Tokyo , Japan
Win 1-0 Takayuki Okochi Decision (unanimous) Shooto - GIG East 6 2 Tokyo , Japan

Question: What is round when the record for Kuniyoshi Hironaka is "4-1"?