lesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contractslesson 3 of 5 · schema drift and dataset contractsschema drift and dataset contracts
Three records hit the contract: one clean, one with a type drift, one with a surprise new field. What does this print?