Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Independence Hall' has mentioned 'National park' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| The 1948 law creating the National Park has as its express purpose the preservation of the historic structures. | UNESCO |
| Inclusion of Independence Hall in the National Park system gives it the highest possible level of protection, as it is maintained by the federal government. | UNESCO |