Anchor: In the meantime, the Young Adventurers were sitting bolt upright, very stiff and ill at ease, in a taxi which, with a singular lack of originality, was also returning to the Ritz via Regent's Park.
Entailed: The taxi held the adventurers inside it. 
Contradiction: The adventurers walked home instead of taking a cab. 
Contradiction: Said is happy.
Contradiction: The chemistry in medicine are milliliters
Contradiction: Sulfur dioxide allowances are not set yet.
Contradiction: A man exits the pool after a dip.