What is the meaning of these two sentence?
３０分前に、陳さんから電話がありました
（図書館で）１か月本を借りることができます。

Question

Answer

Depending on how 陳 is read (I'll just assume it's read Jin):
There was a call from Jin 30 minutes ago.
(In the library) You can borrow the book for one month.

Answer

Though "。" at the end of the first sentence is missed, both of them are correct and sounds natural.