this subject is the bomb folks!
sure bell labs has described entanglement but the easiest method of observing entanglement is by human experience.
Words entangle mass! Ie... you read what i am conveying, you measure, weigh and log the interaction. But nothing exchanged except the photon and appicability in association to the previously recorded definitions to the words. When the correct alignment find coherance, you understand what is conveyed and an action can ensue (potential to mass).
Em (light/photon/electromagnetic energy) shared between mass entangles all exposed to that dimension (slice) in time. (ieee... words can transcend time; see books)
Now the longer bodies exchange energy a greater potential can ensue between the bodies (see casimir, van der waals)
at bell labs, Mit and all over the world; this single property of energy is finally being measured and will be proven that this property is the 'missing link' to physics
ie.... show me entanglement in virial theorem before the 'creation' of the entities dark energy/matter?
let the claim stand; entangled energy between mass is that gravity between mass (just note what E=mc2 means; that mass is just em)