Anchor: Therefore, Microsoft owes its success to the good fortune of being the pre-eminent operating system on IBM PCs.
Entailed: The success of Microsoft is based on it's operating system.
Contradiction: Microsoft would have been just as successful without any operating system.
Contradiction: i don't know hiw name
Contradiction: Two people are holding something.
Contradiction: People climbing a mountain.
Contradiction: He stared at the statue and felt a chill.