Calamitous means the same as unfortunate. It’s definition is catastrophic or disastrous.
I think Is A, I don’t know
The use of the prepositional phrase is "on the roof".
On is a preposition and the phrase ends at roof.
I hope that helped!
In computer hypertext, a fragment identifier is a short string of characters that refers to a resource that is subordinate to another, primary resource. The primary resource is identified by a Uniform Resource Identifier (URI), and the fragment identifier points to the subordinate resource.
The fragment identifier introduced by a hash mark # is the optional last part of a URL for a document. It is typically used to identify a portion of that document. The generic syntax is specified in RFC 3986. The hash mark separator in URIs does not belong to the fragment identifier.
