Assertion: rainbow | /r/HasProperty | optical illusion
Facets:
value: in essence
type: OTHER
value: in a way
type: MANNER
Source sentences:
text: A rainbow is an optical illusion —it does not actually exist in a specific spot in the sky.
text: This place is appropriately impossible to reach, because the rainbow is an optical effect which cannot be approached.
text: A rainbow is an optical phenomenon which involves three processes: reflection, dispersion, and refraction.
text: This may seem like an impossible feat, given that a rainbow is, in a way, an optical illusion.
text: In essence, a rainbow is an optical illusion.
text: A rainbow is an optical illusion, so you just can't catch up to it.
text: This place is impossible to reach, because the rainbow is an optical effect which depends on the location of the viewer.
text: A rainbow is an optical phenomenon that appears as a band of colours in an arc, resulting from the refraction of the sun's light rays by the rain.