A Japanese man aged 73 became the world’s oldest person to swim across the country’s Tsugaru Strait on Wednesday, supporters said, braving unpredictable currents and stinging jellyfish in his quest.
S A Japanese man (aged 73)
O (the world’s) oldest person →どんな [to swim]
V [to swim]
[across] (the country’s Tsugaru) Strait
O (unpredictable) currents [and] (stinging) jellyfish 刺すクラゲ
[in] his quest.