Sentence: "There is arriving three men at that station."
Would a linguist rate this sentence to be acceptable linguistically?
A: unacceptable

Sentence: "I saw Mary and him downtown yesterday, your friend from Boston."
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "John wants to go on vacation, but he doesn't know when to."
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "I believed that Otto was wearing this hat."
Would a linguist rate this sentence to be acceptable linguistically?
A:
acceptable