Anchor: Then came upper-caste converts from Hinduism, the  clean  castes of both merchants and artisans, and then the  unclean  occupations of scavengers.
Entailed: There were several castes in the system.
Contradiction: There were no castes.
Contradiction: Do not talk.
Contradiction: people are sitted
Contradiction: The people are sitting and eating gelato.
Contradiction: The postal service charges customers for delivery.