the ETD is an artwork.
sent1: if the fact that something does not worst but it is an artwork does not hold then it is not a kind of an artwork. sent2: if the Frost is not worsted the ETD is an artwork and is a Rumex. sent3: if the Frost is not a worsted that the ETD is a Rumex is not incorrect. sent4: something is not a Rumex and it is not an artwork.
the ETD is a kind of a Kasai and is a motion.
$hypothesis$ = the ETD is an artwork. ; $context$ = sent1: if the fact that something does not worst but it is an artwork does not hold then it is not a kind of an artwork. sent2: if the Frost is not worsted the ETD is an artwork and is a Rumex. sent3: if the Frost is not a worsted that the ETD is a Rumex is not incorrect. sent4: something is not a Rumex and it is not an artwork. ; $proof$ = 
__UNKNOWN__