Text: Tahrir Square (Liberation Square) on the east bank is its heart, a mass of streets converging on the biggest bus terminus in the city, which is bounded by government ministries and office blocks housing airline offices and travel agencies.
Entailment: Liberation Square is at the east of its heart, and is a massive block of streets.
Contradiction: Tahrir Square is on the west bank of its heart, a small street with a few cozy shops.