Anchor: Hence, for investment in information technology to be profitable, its gross rate of return must be quite high.
Entailed: The gross rate of return on an investment in information technology must be high for it to be profitable.
Contradiction: The return on an investment must be low for it to be profitable.
Contradiction: A climber is climbing a mountain.
Contradiction: Nowadays most of them keep working even when they have children.
Contradiction: I know you believe it, it's not true.
Contradiction: A guy riding a BMX bicycle outside.