This is the 1261st most frequent Japanese word.
含ま
"含ま" is a stem form of the verb "含む," meaning "to include" or "to contain."
In this sentence, '含まれている' means 'to be included' and signifies that taxes are part of the total price.
この価格には税金が含まれています。
Taxes are included in this price.
Here, '含まれている' denotes 'to include,' and it indicates that the lies are a part of his story.
彼の話には少し嘘も含まれている気がします。
I feel that his story includes a few lies.
In this query, '含まれている' is used to ask whether meals are part of the participation cost.