Bauerstein is a spy?" Poirot nodded. 
Poirot's expression confirmed that Bauerstein is a spy.
Poirot confirmed Bauerstein is not a spy.
The police officer is at the police office.
A young man plays a violin solo in an urban area.
Something befell the ingredients that resulted in this.
The woman is sleeping.
the pedestrians were on the bridge
The dog is running through the woods.