has kind of a unique and then depending on the surrounding words you would still hope that a given word would have similar similar embedding or similar word vector all across the language but you can kind of fine tune it to the particular sentence it is in and also you can completely change its meaning if it's if it's kind of a word that has a completely new meaning in that sentence so basically uses two LST M's one as as I said here forward one backward these also have multiple layers and so and each of these produce one such hidden