The simple subject in the sentence is "Valentine's Day."
Valentine's Day is the simple subject
Interesting
ties
celebrated
Many stories about the first Valentine's day
you.
You
First find the verb. In this case it is "is."Now ask "What is?" It would be easy to say that "gold" is, except that gold follows the preposition "of." The simple subject is "history". History is exciting; "of gold" just adds detail as to what kind of history or which history.
questions
it wr4ong
Mathematics is a large subject; some parts of it are relatively simple and easy, while other parts are complicated and difficult. Intelligent people find mathematics to be very interesting.
He didn't send valentines. He sent a simple note to the daughter of his jailer a short time before he was martyred in 287 and signed it "From your Valentine."