Sentence: "An example of these substances be tobacco."
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "Mary dates exactly two of the men who know a producer I like."
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "How did you solve the problem?"
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "I went out with a girl who it pleased that John showed up."
Would a linguist rate this sentence to be acceptable linguistically?
A:
acceptable