Anchor: There's no sign of an economic boom or increased optimism (whether justified or not) about technology.
Entailed: I don't see signs of an economic boom or increased optimism about technology.
Contradiction: I see signs of an economic boom and increased optimism about technology.
Contradiction: I asked if she spoke Spanish.
Contradiction: Three dogs are running through a field
Contradiction: The child is sleeping.
Contradiction: People are playing basketball.