Five jumbled sentences (labelled 1, 2, 3, 4, and 5), related to a topic, are given below. Four of them can be put together to form a coherent paragraph. Identify the odd sentence out and key in the number of that sentence as your answer.

1.Sporting a copper-coloured pixie cut and a pair of pink feather antlers, Torres himself resembles a child’s doodle.
2.His casual millennial delivery, peppered with “um”s and “ah”s, makes surreal concepts sound like items on a brunch menu.
3.Though he may have failed so far in his colour-scouting mission (he hasn’t yet found a new one, he admits), this hour leaves you tickled pink.
4.Like his previous show, My Favourite Shapes, this is an hour of sit-down comedy aided by an overhead camera which relays Torres’s theories - illustrated with crayon squiggles - on to a screen behind him.
5.His inquisitive mind produces interconnected ideas about Catholicism, the blandness of Pixar and what orange sounds like, while his insights train us to spot “highly purple behaviour”.