Read these stage directions from Eugene O'Neill's play The Straw. Act One

Scene One: The Kitchen of the Carmody Home--Evening.
Scene Two: The Reception Room of the Infirmary, Hill Farm
Sanatorium--An Evening a Week Later.

Act Two

Scene One: Assembly Room of the Main Building at the Sanatorium--A Morning Four Months Later.
Scene Two: A Crossroads Near the Sanatorium--Midnight of the Same Day.

Act Three

An Isolation Room and Porch at the Sanatorium--An Afternoon Four Months Later.

TIME--1910

Which of these can be determined from these scene descriptions?

There are two scenes in each Act.
The play takes place over the course of four months.
One of the Carmodys' children is sick.
Much of the action of the play takes place at a Sanatorium.