Objects in the image:
category: horse
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: horse
category: horse
category: horse
category: person
category: person
category: horse
category: person
category: person
category: horse
category: horse
category: person
category: person

Guessing-game dialogue about one of the objects:
q: Is it a person on horseback?
a: Yes
q: Is it any of the front 3 riders?
a: No
q: Is the persons upper body fully visible in the mask?
a: Yes
q: Is it someone on the left flank then?
a: Yes
q: Is it the rider in the left flank according to the tassels on their heads?
a: No
q: Is it second to last rider?
a: No
q: 3rd to last?
a: Yes
q: Does his tassle sit a bit higher than the other tassles around him?
a: Yes