physicalReleaseDate

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: physicalReleaseDate

Indicates the calendar date on which a work is first made available in a tangible, physical format (e.g., disc, print, cartridge).