António eats some watermelon
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
António enters the lab already wielding a knife. He takes his time cutting the watermelon open, as by his own admittance, he is not a messy person. By the time he cuts out a chunk of watermelon and starts eating, he has used up nearly 3/4 of his allotted time. António eats a total of 120g, and comes fourth.
(Written by Jenny R and proofread by Karl Craven)