OK, this is the time for riddles. How to measure a water volume whether it's more or less than half bucket? What is {A} > {B} > {} > {A, B}?

Oke, saatnya main teka-teki. Gimana cara mengukur isi air apakah lebih atau kurang dari setengah ember? Apakah {A} > {B} > {} > {A, B}?

Oke, saatnya main teka-teki. Ga usah banyak basa-basi ah, seperti "Dari mana dapet teka-teki ini?" Tapi berhubung pembaca akan kecewa kalo bertanya dan ga dijawab, akhirnya kujawab juga, "Dari buku pelajaran matematika murid kelas 2 SMP."

OK, now is the time for riddles. No need to have a lot of courtesy ceremony, like "Where did you get this riddle from?" But due to the disappointment of readers if they ask me and I don't answer it, finally I answer it, "From a textbook of a student of second grade of junior high school."

Iseng aja bikin gambar ini
This pic is just for fun

Cuma ada 2. Yang pertama:

Aku punya ember berbentuk silinder. Di dalamnya ada air kira-kira setengahnya, tapi tidak tepat setengahnya. Bagaimana cara aku tau apakah air itu lebih dari setengah atau kurang dari setengah? (Ga ada tongkat, ukuran, penggaris, atau alat2 apapun. Embernya pun cuma satu.)

There are only 2. The first one:

I have a cylinder bucket. Inside it there is a water about half of the bucket, but is not exactly half. How can I know if the water is more than half or less than half? (There is no rod, measurement, ruler, or any tools. Even there is only one bucket.)

Yang kedua ini sangat ga mirip dengan yang pertama, lagipula ini sumbernya juga lain. Tebak aja sesukamu kira2 apa ini, salah maupun benar tak masalah.

"A lebih baik daripada B lebih baik daripada tiada lebih baik daripada A dan B," kata C.

Kalo mau dengan notasi himpunan: "{A} lebih baik daripada {B} lebih baik daripada {} lebih baik daripada {A, B}," kata C.

Apakah itu? Maksudnya, kira2 apa hubungan A dengan B dengan C?

The second one is very different from the first one, moreover the source is also different. Just guess what it is as you would like, wrong or right is not a problem.

"A is better than B is better than noone is better than A and B," says C.

If you prefer using set notation: "{A} is better than {B} is better than {} is better than {A, B}," says C.

What are they? I mean, guess what are the relations between A and B and C?