Assertion: black walnut's leaflet | /r/AtLocation | the center
Facets:
Source sentences:
text: The stems have 15–23 leaflets, with the largest leaflets located in the center, 7–10 cm ( 2 3 ⁄ 4 –4 in) long and 2–3 cm ( 3 ⁄ 4 – 1 1 ⁄ 4 in) broad.  
text: The stems have 15–23 leaflets, with the largest leaflets located in the center, 7–10 cm ( –4 in) long and 2–3 cm ( – in) broad.