that the alpinist is absorbable and it is a chair does not hold.
sent1: the alpinist does overreach SD. sent2: the fact that the alpinist does chair is right. sent3: The SD does overreach alpinist. sent4: if the alpinist does overreach SD then it is absorbable.
sent4 & sent1 -> int1: the alpinist is absorbable.; int1 & sent2 -> hypothesis;
$hypothesis$ = that the alpinist is absorbable and it is a chair does not hold. ; $context$ = sent1: the alpinist does overreach SD. sent2: the fact that the alpinist does chair is right. sent3: The SD does overreach alpinist. sent4: if the alpinist does overreach SD then it is absorbable. ; $proof$ = 
sent4 & sent1 -> int1: the alpinist is absorbable.; int1 & sent2 -> hypothesis; __DISPROVED__