Assertion: stadium's roof | /r/CapableOf | act as umbrella
Facets:
value: for the playing field
type: TRANSITIVE-OBJECT
Source sentences:
text: T-Mobile Park has a unique retractable roof that only acts as an "umbrella" for the playing field and stands, rather than forming a complete climate-controlled enclosure, as is the case with all other retractable roofs in Major League Baseball.