create implication identical_twins (330) -> twins (0)
create implication fraternal_twins (587) -> twins (0)
create implication twin_sisters (26) -> twins (0)
create implication twin_sisters (26) -> sibling (0)
create implication twin_sisters (26) -> sisters (0)
create implication twin_sisters (26) -> sister (0)
create implication twin_brothers (45) -> twins (0)
create implication twin_brothers (45) -> sibling (0)
create implication twin_brothers (45) -> brothers (0)
create implication twin_brothers (45) -> brother (0)