premise: Susarion (Greek: Σουσαρίων) was an Archaic Greek comic poet, was a native of Tripodiscus in Megaris (see Megara) and is considered one of the originators of metrical comedy and, by others, he was considered the founder of Attic Comedy. Nothing of his work, however, survives except one iambic fragment (see below) and this is not from a comedy but instead seems to belong within the Iambus tradition.
hypothesis: Susarion's primary medium appears to be poetry.
reason: His famous for being a comedic poet, so his primary artistic medium is likely poetry.