In a small college, a group of students is working on a theatre production. The group consists of Kofi, who is the scriptwriter, Liora, who is the director, and Priyanka, who is in charge of costumes. One day, Kofi leaves his script in the theatre hall while they are all discussing the play's progress. Later that day, Kofi realizes he can't find the script anywhere. He remembers he last had it in the theatre hall.

Kofi goes back to look for the script and bumps into Liora. Kofi asks Liora if she has seen the script, and Liora, who saw it on a chair after the earlier meeting and assumed Kofi would come back for it, says she saw it but didn't pick it up. After Kofi left, unbeknownst to Liora, Priyanka enters the theatre and sees the script. She picks it up, thinking to bring it to Kofi the next day, not wanting the script to be lost.

Now, Enzo, another student uninvolved with the production but who is fond of attending the drama club meetings and has a keen interest in their activities, saw Priyanka pick up the script. Enzo doesn't say anything because he assumes Priyanka is taking it to Kofi. He leaves right after Priyanka. Moreover, after Priyanka leaves with the script, another student, Sulaiman, who is responsible for the set design, enters the hall, sees no script, does some work, and then leaves.

The next day at the production meeting, Kofi is visibly upset about his missing script and asks the group if anyone has seen it. Liora explains that she saw it in the hall the previous day but didn't take it. Priyanka then enters the meeting, late and holding the script, apologizing to Kofi for not telling him sooner that she picked it up. Sulaiman is confused because when he was in the hall, he did not see the script at all.

Based on this information, who knows what about the location of the script between the time Kofi first lost it and the following day's meeting?
At the start, only Kofi knew he had left the script in the theatre hall after their discussion. When he came back looking for it, Liora then knew that the script had been in the hall because she had seen it but her knowledge stopped there as she did not know where the script went after their conversation. She had assumed it would still be in the same place when/if Kofi returned to retrieve it.

When Kofi leaves the hall after speaking with Liora, Priyanka becomes the next person to gain knowledge about the script's whereabouts, as she enters the theatre, sees the script, and takes it with her, intending to return it to Kofi later. At this point, Priyanka knows the location of the script while Kofi is left in the dark, unaware of its new location. 

Enzo, who sees Priyanka pick up the script, has knowledge about who has the script (Priyanka) and possibly its current location (with Priyanka), but he is operating under the assumption that she is taking it directly to Kofi. He does not communicate this to anyone, so his is a passive knowledge that doesn't affect the actions of others.

Sulaiman enters the equation after Priyanka has left with the script. Sulaiman's understanding of the situation is that the script is not in the theatre hall, as he did not see it when he was there. He is unaware that Priyanka had previously picked it up, and he has no knowledge of its current whereabouts.

By the next day's production meeting, the knowledge state changes. When Kofi inquires about the script, Liora shares what she knew: the script was in the hall, but she didn't take it. Priyanka then enters with the script, explaining that she picked it up and inadvertently failed to inform Kofi in time. At this point, everyone in the production meeting knows that Priyanka had the script and has now returned it to Kofi. Sulaiman's confusion is because he never saw the script the previous day and was not present when Priyanka picked it up. His knowledge of the situation only extends to the fact that the script was missing when he was in the hall.

By the end of this sequence of events, all those in the production meeting know that Priyanka had taken the script and has now given it back to Kofi; Kofi knows his script was returned by Priyanka; Liora is aware that the script had been in the theatre hall and is now returned; Sulaiman learned the script had been missing but is now found without knowledge of what happened in between; and Enzo's knowledge that Priyanka had the script is reaffirmed when she returns it during the meeting, although he may or may not realize that Priyanka didn't give the script to Kofi immediately as he had assumed.