Romain,fabien,lise,jen and adrien stand in a single row.romain is after lise.fabien is before romain and just after jennifer.jennifer is before lise but she is not d first.where iS adrien?

To determine where Adrien is in the lineup, we need to analyze the given information and establish the correct order.

1. Romain is after Lise.
2. Fabien is before Romain and just after Jennifer.
3. Jennifer is before Lise but not the first in line.

Let's break down the information step by step:

Based on the second clue, we know that Fabien is before Romain and just after Jennifer. So, the order sequence must be:
Jennifer - Fabien - Romain - [Unknown position for Lise, Adrien]

Next, referring to the first clue, we know that Romain is after Lise. However, we still don't know the positions of Lise and Adrien.

Taking into account the third clue, Jennifer is before Lise but not the first. Since Jennifer is already placed before Fabien, it means she cannot be in the first position. Therefore, Jennifer must be either in the second or third position.

Now, we can reevaluate the possible orders:

1. [Unknown position for Jennifer] - Jennifer - Fabien - Romain - [Unknown position for Lise, Adrien]
2. Jennifer - [Unknown position for Jennifer] - Fabien - Romain - [Unknown position for Lise, Adrien]

But, keep in mind that Jennifer is before Lise. So, option 2 doesn't adhere to that condition. Therefore, we need to choose option 1 as the correct sequence of positions.

Hence, the lineup is:
Adrien - Jennifer - Fabien - Romain - Lise.

From the established order, we can conclude that Adrien is in the first position.