When the crew opened a sack thinking it was gold only to find that it was a huge wind that blew them off course.
False. The Spanish alphabet has 29 letters in the alphabet. The English letters, ñ, and ll. (I’m not sure if ch and really are part of it)
A prepositional phrase is a preposition and a noun, with or without the addition of a modifier. "At the corner" is the prepositional phrase in this instance.