Sentence 1: We should start by spiking the river.

Sentence 2: Spiking the river should be the first thing we do to prepare for battle.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Figure 3. NOx Emissions (million tons) Figure 4. Mercury Emissions (tons)

Sentence 2: There are more NOx emissions than mercury emissions.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Edward treated King John as a vassal.

Sentence 2: King John treated Edward like a vassal.
Is this second sentence entailed by the first?

Answer:
no