Please give me more clarity about below sentences in scrum guide :
First Sentence:
Sprint goal is an objective set for the sprint that can be met through implementation of product backlog.
Here, the reason for confusion is product backlog. Should it be Sprint Backlog instead of product backlog. If no, please explain.
Second Sentence:
Work planned for the first days of the sprint by the development team is decomposed by the end of sprint planning meeting.