When a property has a value that is falsy, only the name of the property is displayed, not the value. https://json-ld.org/playground/next/#json-ld=%7B%22x%3AboolF%22%3Afalse%2C%22x%3AboolT%22%3Atrue%2C%22x%3AnumberF%22%3A0%2C%22x%3AnumberT%22%3A1%2C%22x%3AlistF%22%3A%5B%5D%2C%22x%3AlistT%22%3A%5B1%2C2%5D%7D&startTab=tab-visualized
When a property has a value that is falsy, only the name of the property is displayed, not the value.
https://json-ld.org/playground/next/#json-ld=%7B%22x%3AboolF%22%3Afalse%2C%22x%3AboolT%22%3Atrue%2C%22x%3AnumberF%22%3A0%2C%22x%3AnumberT%22%3A1%2C%22x%3AlistF%22%3A%5B%5D%2C%22x%3AlistT%22%3A%5B1%2C2%5D%7D&startTab=tab-visualized