Premise: Miss Howard had always seemed to me so essentially honest "almost uncomfortably so. Poirot gave me a curious look, which I could not quite fathom.

Hypothesis: Miss Howard seems overly dishonest and Poirot gave me an approving look.
Answer: no

Premise: The effect was purposely a broad one in case Albert should miss it.

Hypothesis: The effect was made broad so that Albert wouldn't miss it.
Answer: yes

Premise: and that's about it

Hypothesis: There's more to it than that.
Answer: no

Premise: Against the east wall, flanking the church entrance, are wooden statues of Mary and the Archangel Gabriel by Jacopo della Quercia.

Hypothesis: The wooden statues of Mary and Gabriel were originally designed by Rembrandt.
Answer: no