I keep getting different answers from different sources on these questions... I'm still not sure. Anyone else who can lend their opinion?

Question

#1
I need to know if this is a real or apparent argument.

A: I saw Bob with Mary last night.
B: You saw Frank, Bob's identical twin, with Mary last night.

#2. Also, I need to know if these statements are consistent or inconsistent.
(A and B are two different people)

A: I think Ian is at the tea house.
B: You know very well that Ian is not at the tea house.