Anchor: Entrepreneurs now use cheap new technology, such as remote-operated vehicles, to salvage artifacts from ancient wrecks.
Entailed: Artifacts can be extracted using technological means.
Contradiction: Artifacts can only be removed from ancient wrecks with a human touch.
Contradiction: When you present the data, feel free to plagiarize. 
Contradiction: The swimmer is in the water.
Contradiction: A young boy is sleep.
Contradiction: A person is outside.