Hydration of ethene to ethanol
One recorded run of this reaction, with the species it involved, the conditions the source stated and the evidence behind it.
Conditions
Phosphoric acid catalyst, high temperature and pressure (industrial route).
Yield
Procedure
From the curated record
Water adds across the double bond of ethene to form ethanol.
The source
Curated textbook reaction (fixture record).
How to read this record
This is one experiment, not a rule. It says that on one occasion these species were combined under these conditions and this came out. It does not say the reaction will give the same result on your substrate, and nothing on the page has been generalised into a claim that it would.
The pathway is a separate question, kept on separate pages. A mechanism here is the canonical arrow pushing for a class, run on real structures and labelled rule-derived. It is not evidence, and this record is not a mechanism.