Anchor: The buzzing sound of the wings signals their approach and, if you are lucky, they will fly up and perch on your finger to take the food.
Entailed: They sometimes rest on fingers to take food.
Contradiction: They will never rest on fingers to be fed.
Contradiction: He'll give you 20 shillings. It wasn't written by Tuppence.
Contradiction: Some construction workers are doing their job on the street.
Contradiction: He frowned thoughtfully, "Mr. Brown has wings"
Contradiction: It's remarkable that Apple is a bigger company than Microsoft is.